{"id":19418,"date":"2025-05-09T09:02:25","date_gmt":"2025-05-09T09:02:25","guid":{"rendered":"https:\/\/janhenvalve.com\/?p=19418"},"modified":"2025-07-07T04:00:38","modified_gmt":"2025-07-07T04:00:38","slug":"en-valve-standards","status":"publish","type":"post","link":"https:\/\/janhenvalve.com\/ko_kr\/en-valve-standards\/","title":{"rendered":"Panoramic Analysis of EN Valve Standards: Technical Systems You Must Know for EU Market Acces"},"content":{"rendered":"<h1><b>\u200b\u200bFoundation design and pressure boundary\u200b\u200b<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19571\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/04\/ca5e344d405f4812c09e9284d5fe1dd.png\" alt=\"Valve foundation design, pipeline design\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/04\/ca5e344d405f4812c09e9284d5fe1dd.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/04\/ca5e344d405f4812c09e9284d5fe1dd-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/04\/ca5e344d405f4812c09e9284d5fe1dd-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/b><\/h1>\n<p><span style=\"font-weight: 400;\">Ensure that the valve can withstand pressure, temperature and mechanical loads throughout its life cycle to avoid the risk of failure.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td style=\"text-align: left;\"><span style=\"font-weight: 400;\">Standard No.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Standard Name<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Core technology scope<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 12516-1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Valve housing strength calculation<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Wall thickness formula, stress verification method (based on PED directive)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 12516-2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Flange end valve structure length<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PN series and Class series size comparison table, flange sealing surface roughness requirements (Ra 3.2\u03bcm)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 12516-3<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Wafer valve structure length<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Thin-profile design specifications for butterfly valves\/check valves<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 12516-4<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Threaded\/welding end valves<\/span><\/td>\n<td><span style=\"font-weight: 400;\">NPT thread and ISO 7-1 thread compatibility rules, welding groove type (V type\/U type) and post-weld heat treatment (PWHT)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 1291<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Non-destructive testing (NDT) acceptance criteria<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200bDefect acceptance limits (RT\/UT\/MT), inspection process and judgment rules for castings\/welds\u200b<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">Industry impact: EU PED Directive (2014\/68\/EU) requires compliance with EN 12516 series<\/span><\/p>\n<h3><b>EN 12516-1 &#8220;Valve Shell Strength Calculation&#8221;<\/b><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19572\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/04\/25e50a38a58c047863c99f5011bb23b.png\" alt=\"Valve housing strength, housing mass, housing thickness\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/04\/25e50a38a58c047863c99f5011bb23b.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/04\/25e50a38a58c047863c99f5011bb23b-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/04\/25e50a38a58c047863c99f5011bb23b-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><b>Core technology areas:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wall thickness calculation formula:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Based on the elastic stress analysis of Lam\u00e9&#8217;s formula, the minimum wall thickness is derived:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"3\"><i><span style=\"font-weight: 400;\">P<\/span><\/i> <span style=\"font-weight: 400;\">: Design pressure (bar)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"3\"><i><span style=\"font-weight: 400;\">D<\/span><\/i> <span style=\"font-weight: 400;\">: Valve body inner diameter (mm)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"3\"><i><span style=\"font-weight: 400;\">S<\/span><\/i> <span style=\"font-weight: 400;\">: Allowable material stress (N\/mm\u00b2, refer to EN 10213\/EN 10222)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"3\"><i><span style=\"font-weight: 400;\">C<\/span><\/i> <span style=\"font-weight: 400;\">: Corrosion allowance (\u22651.5mm, chemical media needs to be increased to 3mm)<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bCompared with ASME B16.34\u200b\u200b: The EN standard has stricter requirements on the stress concentration factor of welded valve bodies (limited to less than 1.2 times).<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Verification method:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bFinite Element Analysis (FEA): The Plastic Collapse Criteria of EN 13445-3 must be met.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bBurst pressure test\u200b\u200b: Measured burst pressure \u2265 4 times the design pressure (applicable to Class 900 and above high pressure valves).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>Application scenarios:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bPetrochemical industry\u200b\u200b: Hydrogenation reactor inlet valve (design pressure 420bar, material P91 steel, S=145N\/mm\u00b2).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">LNG storage and transportation: cryogenic stop valve (-196\u2103, material ASTM A351 CF8M, S correction factor \u00d7 0.7).<\/span><\/li>\n<\/ul>\n<p><b>FAQ:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Q: How to deal with the difference in wall thickness between EN 12516-1 and ASME B16.34?<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">A: ASME valves exported to the EU need to recalculate the wall thickness, usually need to be thickened by 10%~15%.<\/span><\/li>\n<\/ul>\n<h3><b>EN 12516-2 &#8220;Structural length of flange-end valves&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>Core technology areas:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bDimension series definition\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\uc555\ub825 \uc218\uc900<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PN10<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PN16<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PN25<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PN40<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PN63<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Structure length<\/span><\/td>\n<td><span style=\"font-weight: 400;\">108mm<\/span><\/td>\n<td><span style=\"font-weight: 400;\">117mm<\/span><\/td>\n<td><span style=\"font-weight: 400;\">152mm<\/span><\/td>\n<td><span style=\"font-weight: 400;\">189mm<\/span><\/td>\n<td><span style=\"font-weight: 400;\">216mm<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">(Take DN50 gate valve as an example, the error allowed is \u00b11.5mm)<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bCompatibility rules\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bAmerican standard to European standard\u200b\u200b: Class 150 flange corresponds to PN20, but the bolt hole spacing needs to be adjusted according to EN 1092-1.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Sealing surface matching: The Ra 3.2\u03bcm roughness requirement of EN flange is incompatible with the Ra 6.3\u03bcm of ASME B16.5 and needs to be reprocessed.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>\u200b\u200bDesign traps\u200b\u200b:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wrong matching example\u200b\u200b: A manufacturer forcibly installed a Class 300 valve body (structural length 241mm) into a PN40 pipe (structural length 189mm), causing the flange bolts to be misaligned.<\/span><\/li>\n<\/ul>\n<h3><b>EN 12516-3 &#8220;Structural length of wafer-type valves &#8220;<\/b><\/h3>\n<figure id=\"attachment_19574\" aria-describedby=\"caption-attachment-19574\" style=\"width: 2000px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19574 size-full\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/08f6f32cd386a9859d736ad82081573.png\" alt=\"\uc6e8\uc774\ud37c \ubc84\ud130\ud50c\ub77c\uc774 \ubc38\ube0c\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/08f6f32cd386a9859d736ad82081573.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/08f6f32cd386a9859d736ad82081573-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/08f6f32cd386a9859d736ad82081573-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><figcaption id=\"caption-attachment-19574\" class=\"wp-caption-text\"><a href=\"\/clamp-butterfly-valve\/\">JH-Wafer Butterfly Valve<\/a><\/figcaption><\/figure>\n<p><b>Core technology areas:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bThin design specifications\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\ubc38\ube0c \uc720\ud615<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\uc6e8\uc774\ud37c \ubc84\ud130\ud50c\ub77c\uc774 \ubc38\ube0c<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Wafer Check Valve<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">DN200 structure length<\/span><\/td>\n<td><span style=\"font-weight: 400;\">108mm<\/span><\/td>\n<td><span style=\"font-weight: 400;\">76mm<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">(Compared with flange butterfly valve, it is shortened by more than 40%)<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Bolt preload calculation:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">formula:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"3\"><i><span style=\"font-weight: 400;\">\u03c3<\/span><\/i> <i><span style=\"font-weight: 400;\">y<\/span><\/i> <span style=\"font-weight: 400;\">: Bolt yield strength (e.g. 640N\/mm\u00b2 for 8.8 grade bolts)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"3\"><i><span style=\"font-weight: 400;\">A<\/span><\/i> <i><span style=\"font-weight: 400;\">s<\/span><\/i> <span style=\"font-weight: 400;\">: Bolt stress cross-sectional area<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"3\"><i><span style=\"font-weight: 400;\">n<\/span><\/i> <span style=\"font-weight: 400;\">: safety factor (\u22651.5)<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>Industry Applications:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bSpace-constrained scenarios\u200b\u200b: ship engine room pipelines, modular chemical plants.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u200b\u200bFailure case\u200b\u200b: Due to insufficient bolt pre-tightening force, a marine wafer butterfly valve loosened in a vibrating environment, resulting in medium leakage.<\/span><\/p>\n<h3><b>EN 12516-4 &#8220;Threaded\/welded end valves&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>Core technology areas:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Thread Compatibility:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Thread Standard<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN 10226 (ISO 7-1)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME B1.20.1 (NPT)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Sealing method<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Conical thread + sealing tape<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Tapered thread metal contact seal<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Applicable pressure<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2264PN40<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2264Class 300<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bWelding end design\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Groove type: V-groove (EN ISO 9692-1) is suitable for wall thickness \u2264 20mm, U-groove is used for thick-walled valves.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bResidual stress control\u200b\u200b: Post-weld heat treatment (PWHT) is required to relieve stress (EN 12952 standard).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>Typical questions:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Q: Can NPT threaded valves be used directly on EN pipes?<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">A: A conversion connector (EN 10226 thread to NPT) is required, otherwise leakage may occur due to the difference in thread pitch.<\/span><\/li>\n<\/ul>\n<h3><b>EN 1291 &#8220;Non-destructive testing (NDT) acceptance criteria&#8221;\u200b\u200b<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Casting inspection:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bRadiographic testing (RT): According to EN 12681-2, the diameter of the pores is \u2264 2 mm and no more than 5 per 100 cm\u00b2.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bMagnetic particle testing (MT): Crack length \u2264 5mm, linear defects are not allowed.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bWeld inspection\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Ultrasonic testing (UT): According to EN ISO 11666, the defect echo height is \u2264 20% DAC curve.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Compliance costs: NDT testing accounts for 8% to 12% of valve manufacturing costs.<\/span><\/p>\n<h3><b>\u200b\u200bTechnical comparison: EN vs. ASME\/API standard system\u200b\u200b<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">Dimensions<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">EN Standards<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">ASME Standards<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">Key Differences and Impacts<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">\u200bDesign Benchmarks\u200b\u200b<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">&#8211; \u200b\u200bEN 12516-1\u200b\u200b: Based on PED Directive ESR (safety factor 1.5~2.5)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; Emphasis on plastic collapse criteria (FEA verification)<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">&#8211; ASME Boiler Code (safety factor 1.5~3.0)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; Based on elastic failure theory<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">\u200b\u200bEN is more conservative: PED requires a higher safety factor and mandatory FEA analysis.<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">\uc555\ub825 \ub4f1\uae09<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">PN Series (PN10~PN400)<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">Class Series (150~2500)<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">\u200b\u200bConversion conflict\u200b\u200b: Class 150 \u2248 PN20, but flange dimensions are incompatible (EN 1092-1 vs. ASME B16.5).<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">\u200b\u200bStructural design specifications\u200b\u200b<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">&#8211; \u200b\u200bEN 12516-1\u200b\u200b: Calculation of wall thickness (Lam\u00e9 formula + corrosion allowance)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; \u200b\u200bEN 12516-2\/3\/4\u200b\u200b: Flange\/wafer\/weld end length<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">&#8211; \u200b\u200bASME B16.34\u200b\u200b: Wall thickness formula based on Barlow theory<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; Structural length is defined as per API 6D<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">\u200b\u200bEN is more stringent: The stress concentration factor of the weld end is limited to \u22641.2 (ASME allows \u22641.5).<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">\u200b\u200bMaterial Certification\u200b\u200b<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">&#8211; EN 10204 3.1\/3.2 certificate (third party testing)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; Materials must meet EN 10213\/EN 10222<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">&#8211; ASME II material specifications (steel mill self-inspection)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; Materials must meet SA\/GB standards<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">\u200b\u200bEN is more stringent: third-party material certification is mandatory, while ASME relies on the steel mill&#8217;s warranty.<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">\u200b\u200bTesting requirements\u200b\u200b<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">&#8211; \u200b\u200bEN 1291\u200b\u200b: Mandatory RT\/UT (pores \u2264 2mm, cracks \u2264 5mm)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; \u200b\u200bEN 12516-1\u200b\u200b: Burst test (\u2265 4 times PN)<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">&#8211; ASME B16.34: Selective RT\/UT<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; API 598: Visual + Hydrostatic Test<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">\u200b\u200bEN costs more: NDT coverage \u2265 80%, ASME only spot checks.<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">\u200b\u200bTest Methods\u200b\u200b<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">&#8211; \u200b\u200bEN 12266-1\u200b\u200b: Helium test (Class D)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; \u200b\u200bEN 12516-1\u200b\u200b: Finite element analysis (plastic collapse)<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">&#8211; API 598: Soap bubble method\/measuring cup method<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; ASME B16.34: Hydrostatic test<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"font-weight: 400;\">\u200b\u200bEN has higher accuracy\u200b\u200b: Helium detection sensitivity reaches 10\u207b\u2076 mbar\u00b7l\/s, while the ASME method only reaches 10\u207b\u00b2 level.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The EN standard has stricter limits on defect density (ASME B16.34 allows a single pore diameter of \u22643mm).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">EN requires that the test report must comply with the EN 10204 3.1 certificate format (ASME has no mandatory format requirements).<\/span><\/li>\n<\/ul>\n<h1><b>Performance testing and leakage control\u200b\u200b<\/b><\/h1>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19582\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/3663d96c9ecfb0b9549d12f20a0b99f.png\" alt=\"Performance testing and leakage control\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/3663d96c9ecfb0b9549d12f20a0b99f.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/3663d96c9ecfb0b9549d12f20a0b99f-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/3663d96c9ecfb0b9549d12f20a0b99f-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Verify the sealing, durability and safety performance of valves under extreme working conditions to ensure compliance with environmental protection requirements such as PED Directive (2014\/68\/EU) and TA-Luft (Air Pollution Control Standard).<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Standard No.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Standard Name<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Test level definition<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 12266-1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Industrial valve pressure testing<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Level A (visual detection) to Level T (helium mass spectrometry detection)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 12266-2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Testing Procedure Supplementary Requirements<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Including low temperature test (-196\u2103), particle medium test method<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 13646<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Solenoid valve performance test<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Response time \u22645ms, 1 million times life verification<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200bEN 15714-3\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Electric actuator testing<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Overload protection (1.5 times torque), emergency shutdown time \u2264 3s, IP67 waterproof grade<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 15714-4<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Actuator Cycle Test<\/span><\/td>\n<td><span style=\"font-weight: 400;\">At least 10,000 opening and closing times without failure<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bISO 15848-1\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Valve low leakage test<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bAH grade (\u226410\u207b\u2076 mbar\u00b7l\/s), BH grade (\u226410\u207b\u2074), CH grade (\u226410\u207b\u00b2)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bTA-Luft\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Air Pollution Control Standards<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bVOC leakage rate \u2264500ppm\u200b\u200b(infrared imaging detection)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">Key Specifications: EN 12266-1 T-level leakage rate \u2264 10\u207b\u2076 mbar\u00b7l\/s (equivalent to ISO 15848 AH level)<\/span><\/p>\n<h3><b>\u00a0EN 12266-1 &#8220;Industrial valve pressure test&#8221;<\/b><\/h3>\n<p><b>Core technology areas:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">1.\u200b\u200bTest classification and leakage rate limit\u200b\u200b:<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Grade<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Detection Methods<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Allowable leakage rate (water pressure test)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable scenarios<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">A<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Visual inspection<\/span><\/td>\n<td><span style=\"font-weight: 400;\">No visible leakage<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Conventional low pressure valve (PN10~PN16)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">B<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Paper towel absorption method<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22640.1\u00d7DN (ml\/min)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Chemical medium pressure valve (PN25~PN40)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">C<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Measuring cup collection method<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22640.01\u00d7DN (ml\/min)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">High pressure valve (PN63~PN100)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">D<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Helium mass spectrometer detection<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u226410\u207b\u2076 mbar\u00b7l\/s<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Nuclear power, LNG ultra-high pressure valves<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">2.\u200b\u200bTest pressure and holding time\u200b\u200b:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Shell strength test: 1.5\u00d7 design pressure (normal temperature), pressure maintenance \u2265 2 minutes (check for permanent deformation or cracks).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bSeal test\u200b\u200b: 1.1\u00d7 design pressure (including high temperature\/low temperature conditions), maintain pressure \u2265 1 minute (to verify sealing surface leakage).<\/span><\/li>\n<\/ul>\n<p><b>Industry Applications:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Nuclear power valves: The main steam isolation valve must pass the D-level helium test (leakage rate \u2264 1\u00d710\u207b\u2077 mbar\u00b7l\/s).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">LNG cryogenic valve: Sealing test after immersion in -196\u2103 liquid nitrogen (material shrinkage must be \u22640.2%).<\/span><\/li>\n<\/ul>\n<p><b>Common Misunderstandings:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bError\u200b\u200b: Equating the API 598 leak rate to the EN standard (API allows a higher leak rate).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Correction: EN 12266-1 Class D \u2248 ISO 15848 Class AH, but EN requires a wider test temperature range (-50~300\u2103).<\/span><\/li>\n<\/ul>\n<h3><b>\u00a0EN 12266-2 &#8220;Supplementary Test Procedure&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>\u200b\u200bSpecial test requirements\u200b\u200b:<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Low temperature test:<\/span><\/li>\n<\/ol>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Liquid nitrogen immersion method: The valve is frozen at -196\u2103 for 24 hours and then opened and closed to verify the material brittleness and sealing performance.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bLow temperature leak rate correction\u200b\u200b: The leak rate limit needs to be multiplied by the temperature correction factor (e.g. \u00d7 1.2 at -50\u00b0C).<\/span><\/li>\n<\/ul>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">High temperature test:<\/span><\/li>\n<\/ol>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bHigh temperature creep test\u200b\u200b: The valve is continuously pressurized at 300\u2103 for 48 hours, and the creep amount of the sealing surface is checked (needed to be \u22640.05mm).<\/span><\/li>\n<\/ul>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bCycle life test\u200b\u200b:<\/span><\/li>\n<\/ol>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bOpening and closing times requirements:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\ubc38\ube0c \uc720\ud615<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Minimum number of cycles<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Leakage rate allowable relaxation value<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Stop valve<\/span><\/td>\n<td><span style=\"font-weight: 400;\">5000 times<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22641.5\u00d7original limit<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\ubcfc \ubc38\ube0c<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10000 times<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22642.0\u00d7original limit<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><b>EN 13646 \u300aElectric Actuator Test\u300b\u200b\u200b<\/b><\/h3>\n<p><b>Core test items and technical requirements\u200b\u200b<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Response time:<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">The opening and closing speed of the solenoid valve directly affects the system control accuracy. Standard requirements:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bOpening time\u200b\u200b \u22645ms (from power on to valve core fully open)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bClosing time\u200b\u200b \u22648ms (from power off to valve core fully closed)<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><i><span style=\"font-weight: 400;\">Test method<\/span><\/i> <span style=\"font-weight: 400;\">: Use a high-speed oscilloscope to capture the current signal and valve core displacement curve, and eliminate signal delay interference (such as cable resistance).<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cycle life vs. leak rate:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Test conditions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Parameter requirements<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Medium pressure<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22651.5\u00d7design pressure (simulated overload condition)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Cycle frequency<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u226510Hz (high frequency opening and closing fatigue test)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Leakage rate after 1 million times<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22640.1\u00d7DN (real-time monitoring under dynamic conditions)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>Extreme environment adaptability<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Temperature shock test:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Rapidly switch between -40\u2103 (freezing for 2 hours) and +150\u2103 (baking for 2 hours) for 10 cycles.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Allowable performance deviation: response time change \u2264 10%, coil insulation resistance \u2265 100M\u03a9.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bVibration test\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Vibration Type<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Frequency range<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Acceleration<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\uc9c0\uc18d<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Random Vibration<\/span><\/td>\n<td><span style=\"font-weight: 400;\">20Hz~2000Hz<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10g RMS<\/span><\/td>\n<td><span style=\"font-weight: 400;\">2 hours per axis<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><b>EN 15714-3 &#8220;Electric Actuator Test&#8221;<\/b><\/h3>\n<p><b>Key test items:<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bOverload protection test\u200b\u200b: The actuator shall not be damaged when running at 1.5 times the rated torque for 10 minutes.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bEmergency shutdown time\u200b\u200b: The time from signal triggering to fully closed position is \u22643 seconds (nuclear power valves require \u22641 second).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bSealing verification\u200b\u200b: The protection level of the actuator housing is \u2265IP67 (no leakage after immersion in water at 1 meter for 30 minutes).<\/span><\/li>\n<\/ol>\n<h3><b>EN 15714-4 &#8221; <\/b><b>Actuator Cyclic Test<\/b><b> &#8220;<\/b><\/h3>\n<p><b>Testing Process and Acceptance Criteria\u200b\u200b<\/b><\/p>\n<p><span style=\"font-weight: 400;\">\u200b\u200bPre-test calibration\u200b\u200b:<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Run the actuator without load for 10 times and record the reference parameters (such as opening and closing time, torque curve) to ensure that the initial state of the actuator is consistent.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u200b\u200bLoad cycle test\u200b\u200b:<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Load Type<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Testing requirements<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Acceptance indicators<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Simulating actual load<\/span><\/td>\n<td><span style=\"font-weight: 400;\">25%~100% rated torque dynamic change<\/span><\/td>\n<td><span style=\"font-weight: 400;\">After 10,000 times, the leakage rate is \u2264 2 times the initial value<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Limit load<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1.5 times rated torque continuous operation 50 times<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Gear wear depth \u2264 0.1mm, no plastic deformation<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">\u200b\u200bIndustry application\u200b\u200b: During the test, the leakage rate of the actuator of a control valve in a chemical plant exceeded the standard due to the aging of the sealing ring. Solution: Use fluororubber sealing ring (corrosion resistance increased by 3 times)<\/span><\/p>\n<p><b>Environmental Testing and Failure Analysis\u200b\u200b<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bHigh and low temperature cycle test\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Condition<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\ub9e4\uac1c\ubcc0\uc218<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Allowable performance deviation<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">High temperature<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Run 500 times at +85\u2103<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Leakage rate \u2264 3 times the initial value<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Low temperature<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Run 500 times at -40\u2103<\/span><\/td>\n<td><span style=\"font-weight: 400;\">The seal has no cracks, and the opening and closing force fluctuation is \u226420%<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">\u200b\u200bTypical problem\u200b\u200b: Grease solidifies at low temperatures, causing the gear to get stuck. Improvement plan: Use fully synthetic low-temperature grease (applicable to -60\u2103~+150\u2103).<\/span><\/p>\n<h3><b>\u00a0ISO 15848-1 &#8220;Valve Low Leakage Test&#8221; (Synergy)<\/b><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19581\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/c70ff8b28b419e778de41fba24c882f.png\" alt=\"Valve low leakage test\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/c70ff8b28b419e778de41fba24c882f.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/c70ff8b28b419e778de41fba24c882f-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/c70ff8b28b419e778de41fba24c882f-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><b>\u200b\u200bLevel division\u200b\u200b:<\/b><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Grade<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Allowable leakage rate (ml\/min)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\uc801\uc6a9 \uac00\ub2a5\ud55c \ubbf8\ub514\uc5b4<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">AH Class<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u226410\u207b\u2076<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Hydrogen, methane<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">BH Class<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u226410\u207b\u2074<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Steam, Nitrogen<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">CH Level<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u226410\u207b\u00b2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Water, non-hazardous liquids<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>\u200b\u200bCompared with EN standards\u200b\u200b:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bDifferences in test conditions\u200b\u200b: ISO 15848 requires simulation of dynamic conditions (testing during valve opening and closing), while EN 12266-1 is only a static test.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bCertification priority\u200b\u200b: Hydrogen valves exported to Europe must meet both EN 12266-1 (Class D) and ISO 15848 (Class AH).<\/span><\/li>\n<\/ul>\n<h3><b>TA-Luft (Air Pollution Control Standard)<\/b><\/h3>\n<p><b>(Cooperative and parallel mandatory relationship)<\/b><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19583\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/2095ac39358c3a5eb8bae08cc20ca7e.png\" alt=\"Air pollution from chemical plants\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/2095ac39358c3a5eb8bae08cc20ca7e.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/2095ac39358c3a5eb8bae08cc20ca7e-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/2095ac39358c3a5eb8bae08cc20ca7e-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<ul>\n<li aria-level=\"1\"><b>\u200b\u200bLeakage limit requirements\u200b\u200b:<\/b><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bVOC (Volatile Organic Compound) Valves: Leakage rate \u2264 500ppm (10 times stricter than EN 12266-1).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bDetection method\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bInfrared imaging method\u200b\u200b: detect trace gas leaks (sensitivity up to 1ppm).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bSoap bubble method\u200b\u200b: For preliminary screening only (not suitable for quantitative analysis).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>\u200b\u200bCompliance design points\u200b\u200b:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bDouble sealing structure\u200b\u200b: such as bellows + graphite packing (leakage rate \u226450ppm).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Material selection: The sealing surface needs to be made of tungsten carbide or ceramic (to avoid high temperature decomposition of polymer materials).<\/span><\/li>\n<\/ul>\n<h3><b>Technical comparison: EN vs. ASME\/API standard basic design<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Dimensions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN Standard System<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME\/API Standards<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Key differences and impact of new standards<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bLeak rate classification\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">&#8211; EN 12266-1 (Grade A\/B\/C\/D)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; \u200b\u200bISO 15848-1\u200b \u200b(Class AH\/BH\/CH)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; TA-Luft (\u2264500ppm VOC)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">API 598 (Grade I to IV)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">New TA-Luft : 10 times stricter than EN 12266-1, requires infrared imaging testing.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u200b\u200bISO 15848\u200b\u200b: Dynamic leakage rate classification (Class AH \u2248 EN Class D).<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bLow Temperature Test\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">&#8211; \u200b\u200bEN 12266-2\u200b \u200b(-196\u2103 liquid nitrogen immersion)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; \u200b\u200bEN 15714-4\u200b\u200b (-40\u2103 cycle test)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Only -46\u2103 low temperature test is required (ASME B16.34)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN is more stringent: LNG valves must pass the EN 12266-2 liquid nitrogen test, while ASME has no similar requirements.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Actuator Testing<\/span><\/td>\n<td><span style=\"font-weight: 400;\">-\u200b \u200bEN 15714-3\u200b \u200b(Functional test of electric actuators)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; \u200b\u200bEN 15714-4\u200b\u200b (Cycle Life Test)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">API 609 (manual operation only)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN is more comprehensive: covers overload protection and cycle life of electric\/pneumatic actuators (ASME has no corresponding standard).<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bTesting Equipment\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">&#8211; EN 12266-1 Class D (Helium mass spectrometer)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; \u200b\u200bTA-Luft\u200b\u200b (infrared imager)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Soap bubble method or measuring cup method (API 598)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN costs more: the investment in helium inspection equipment + infrared imager accounts for 40%~60% of the cost.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bDynamic test requirements\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">&#8211; \u200b\u200bISO 15848-1\u200b \u200b(Dynamic Cyclic Leak Test)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; \u200b\u200bEN 13646\u200b\u200b (High frequency solenoid valve response test)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">API 6D requires dynamic cycle testing<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN relies on ISO : EN standards do not have dynamic tests and need to be supplemented by ISO 15848-1.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u200b\u200bEN 13646\u200b\u200b\uff1aSpecific requirements for dynamic response of solenoid valves.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h1><b>\u00a0\u200b\u200bMaterial and process specifications\u200b\u200b<\/b><\/h1>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19584\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/ab7e680b26af67b5951d1ee5502ce9b.png\" alt=\"\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/ab7e680b26af67b5951d1ee5502ce9b.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/ab7e680b26af67b5951d1ee5502ce9b-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/ab7e680b26af67b5951d1ee5502ce9b-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19585\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/68d436e4321e8b5375c98c4129e7079.png\" alt=\"Valve materials and installation techniques\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/68d436e4321e8b5375c98c4129e7079.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/68d436e4321e8b5375c98c4129e7079-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/68d436e4321e8b5375c98c4129e7079-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Ensure valve material strength, corrosion resistance and process compliance to meet full life cycle safety requirements.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Standard No.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Standard Name<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Material technical requirements<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 10213<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Pressure steel castings<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Covering nuclear power materials such as GP240GH, G20Mo5, etc.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 10222<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Technical conditions for steel forgings<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Heat treatment process for high strength materials such as P265GH and P460NH<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 10088<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Stainless steel selection specifications<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Corrosion resistance scenario guide for 1.4404 (316L) and 1.4539 (904L)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 10204<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Material certification system<\/span><\/td>\n<td><span style=\"font-weight: 400;\">3.1\/3.2 Legal validity of certificates in PED certification<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">\u200b\u200bSpecial requirements\u200b\u200b: EN 10213-4 Charpy impact energy for low temperature materials (-196\u2103) \u2265 40J<\/span><\/p>\n<h3><b>3.1 EN 10213 &#8220;Steel Castings for Pressure&#8221;<\/b><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19584\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/ab7e680b26af67b5951d1ee5502ce9b.png\" alt=\"Casting valve\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/ab7e680b26af67b5951d1ee5502ce9b.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/ab7e680b26af67b5951d1ee5502ce9b-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/ab7e680b26af67b5951d1ee5502ce9b-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><b>Core technology areas:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Material Grade:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Brand<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Tensile strength (MPa)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable scenarios<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">GP240GH<\/span><\/td>\n<td><span style=\"font-weight: 400;\">400~550<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Low pressure valve (PN10~PN16)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">G20Mn5<\/span><\/td>\n<td><span style=\"font-weight: 400;\">500~700<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Medium pressure valve (PN25~PN40)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">G17CrMo5-5<\/span><\/td>\n<td><span style=\"font-weight: 400;\">650~850<\/span><\/td>\n<td><span style=\"font-weight: 400;\">High temperature and high pressure valves (PN63~PN100)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Casting process requirements:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Minimum wall thickness \u22658mm (to prevent shrinkage defects).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Repair welding limit: The same area can be repaired \u2264 2 times, and UT testing must be carried out according to EN 1291.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>Industry Applications:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Water system valves: GP240GH is used for butterfly valve housings in water plants.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bMain steam valve of thermal power station: G17CrMo5-5 has a temperature resistance of up to 540\u2103 and excellent creep resistance.<\/span><\/li>\n<\/ul>\n<p><b>FAQ:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bDefect handling\u200b\u200b: Castings with pore diameters greater than 2mm must be scrapped and grinding and filling are not allowed.<\/span><\/li>\n<\/ul>\n<h3><b>EN 10222 &#8220;Pressure Forgings &#8220;<\/b><\/h3>\n<p><b>Core technology areas:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Forging Grade:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Grade<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Testing requirements<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable pressure level<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Class 1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">No NDT<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PN10~PN25<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Class 3<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100% UT+RT<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PN40~PN100<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Class 4<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Additional impact test<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PN160~PN400<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Heat treatment specifications:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Normalizing + tempering (applicable to C-Mn steel, hardness \u2264 250HB).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Quenching + tempering (applicable to alloy steel, hardness \u2264300HB).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>Application scenarios:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bUltra-High Pressure Valves\u200b\u200b: Class 4 forgings are used for PN400 hydrogenation reactor valve bodies.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Low temperature impact requirements: Impact energy \u2265 40J at -46\u2103 (mandatory requirement for LNG valves).<\/span><\/li>\n<\/ul>\n<h3><b>EN 10088 &#8220;General Technical Requirements for Stainless Steels&#8221;\u200b\u200b<\/b><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19604\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/066e9291e63f4b8f7f7c567e0cc4ef9.png\" alt=\"Valve material: stainless steel plate\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/066e9291e63f4b8f7f7c567e0cc4ef9.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/066e9291e63f4b8f7f7c567e0cc4ef9-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/066e9291e63f4b8f7f7c567e0cc4ef9-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><b>Core technology areas:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Corrosion resistance classification:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Brand<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PREN value (pitting resistance equivalent)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\uc801\uc6a9 \uac00\ub2a5\ud55c \ubbf8\ub514\uc5b4<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">1.4401 (316)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u226535<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Weak acid, seawater (Cl\u207b\u2264200ppm)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">1.4539 (904L)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u226545<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Strong acid, Cl\u207b containing medium<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Surface treatment:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Electrolytic polishing (Ra\u22640.8\u03bcm, for food grade valves).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Pickling and passivation (remove oxide layer and improve corrosion resistance).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>\u200b\u200bFailure case\u200b\u200b:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The 316L ball valve in a chemical plant suffered from Cl\u207b stress corrosion cracking, which was solved after it was replaced with 1.4529 (super duplex steel).<\/span><\/li>\n<\/ul>\n<h3><b>EN 10204\u300aMaterial Certification Types\u300b\u200b\u200b<\/b><\/h3>\n<p><b>Core Requirements:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bCertificate Level\u200b\u200b\uff1a<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Certificate Type<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Testing Party<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable scenarios<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">3.1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Steel Plant Self-Inspection<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Conventional industrial valves<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">3.2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Third-party laboratory<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Nuclear power, PED Category III\/IV valves<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bFile Contents\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Chemical composition, mechanical properties, NDT report (only required for 3.2 certificate).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Compliance cost: The price of 3.2 certificate materials is 15%~30% higher than 3.1.<\/span><\/p>\n<h3><b>\u200b\u200bTechnical comparison: EN vs. ASME material systems\u200b\u200b<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Dimensions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN Standard System<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME Standards<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Differential Impact<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bMaterial Certification\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN 10204 3.1\/3.2 (Third Party Mandatory)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME II (Steel Plant Self-Inspection)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN materials are more expensive, but the data reliability is strong (a must for nuclear power).<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bStainless Steel Corrosion Resistance\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PREN values \u200b\u200bclearly classified (EN 10088)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">UNS numbers (such as S31600) have no PREN value definition<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN is easier to select materials and directly matches the corrosiveness of the medium.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bForging Inspection\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN 10222 Class 3\/4 (100% UT\/RT)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME SA-105 (hardness test only)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN forgings have a lower defect rate, but the production cycle is extended by 20%~30%.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bRestrictions on welding repair\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN 10213 welding repair \u2264 2 times, and UT verification is required<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME B16.34 allows grinding repair (unlimited number of times)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN is more stringent, but reduces the risk of stress concentration due to weld repairs.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h1><b>Connection and interface standardization\u200b\u200b<\/b><\/h1>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19603\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/712746e1f1bee951488af569e7c8195.png\" alt=\"Valve pipe interface and connection\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/712746e1f1bee951488af569e7c8195.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/712746e1f1bee951488af569e7c8195-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/712746e1f1bee951488af569e7c8195-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Ensure compatibility and interchangeability between valves, pipelines and actuators, and reduce engineering adaptation costs<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Standard No.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Standard Name<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Interface technology definition<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 1092-1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Steel flange (PN series)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PN6~PN400 flange dimensions and sealing surface processing requirements<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 1759-1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Steel flange (Class series)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Class 150~2500 American standard flange to European standard conversion rules<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN ISO 5211<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Actuator interface<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Torque transmission capacity classification of F03~F14 flanges<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 558<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Valve end structure<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Flange\/thread\/clamp end chamfer and surface treatment standards<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">Compatibility: EN 1092-1 flanges can be used with ASME B16.5 Class 150 flanges.<\/span><\/p>\n<h3><b>\u00a0EN 1092-1 Flanges and their joints<\/b><\/h3>\n<p><b>Core technology areas:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Flange type and sealing surface:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Flange Type<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Sealing surface type<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable pressure level<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Typical application scenarios<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Plate flange (PL)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Raised Face (RF)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PN10~PN40<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Water treatment, HVAC pipeline<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Butt welding flange (WN)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ring Joint (RJ)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PN63~PN400<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Petrochemical, LNG high-pressure pipelines<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Loose flange (LJ)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Flat Face (FF)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PN6~PN16<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Corrosive media (pickling pipeline)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Pressure level comparison:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">EN flange (PN)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Similar to ASME Class<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Bolt hole center distance error<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">PN16<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Class 150<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u00b11.0mm<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">PN40<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Class 300<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u00b11.5mm<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">PN100<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Class 600<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u00b12.0mm<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Material Group:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bGroup 1\u200b\u200b: Carbon steel (C22.8)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bGroup 2\u200b\u200b: Stainless steel (1.4401)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Group 3: Nickel-based alloys (Inconel 625)<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>FAQ:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bMismatch\u200b\u200b: Forcing a Class 150 flange (ASME B16.5) onto a PN16 pipe (EN 1092-1) results in misaligned bolt holes.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bSolution\u200b\u200b: Use conversion flange (designed in accordance with EN 1759-1 and ASME B16.47).<\/span><\/li>\n<\/ul>\n<h3><b>EN 1759-1 &#8220;American Series Flanges&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>\u200b\u200bSpecial positioning\u200b\u200b:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Standard properties\u200b\u200b: Compatible with American flanges (Class 150~2500) in EN standards, but with stricter dimensional tolerances.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bKey Differences\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\ub9e4\uac1c\ubcc0\uc218<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN 1759-1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME B16.5<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Flange thickness<\/span><\/td>\n<td><span style=\"font-weight: 400;\">+0.5mm~-0.3mm<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u00b11.0mm<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Bolt hole diameter<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Exactly matching bolt size<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Allow +0.5mm margin<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>Application scenarios:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bTransnational projects\u200b\u200b: When European equipment (EN 1092-1) is connected to American pipes (ASME B16.5), EN 1759-1 flange transition is used.<\/span><\/li>\n<\/ul>\n<h3><b>EN ISO 5211 &#8220;Valve drive installation interface&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>Core Specifications:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Drive interface size:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Interface code<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Square drive head dimensions (mm)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Maximum torque (Nm)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable actuator type<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">F03<\/span><\/td>\n<td><span style=\"font-weight: 400;\">15\u00d715<\/span><\/td>\n<td><span style=\"font-weight: 400;\">50<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Small Pneumatic Actuators<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">10<\/span><\/td>\n<td><span style=\"font-weight: 400;\">50\u00d750<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1000<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Electric actuator (DN200 valve)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">F16<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100\u00d7100<\/span><\/td>\n<td><span style=\"font-weight: 400;\">5000<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Hydraulic actuator (DN600 and above)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Mounting tolerance\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">The coaxiality error of the drive shaft is \u22640.1mm\/m.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Flange surface parallelism error \u2264 0.05mm.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>\u200b\u200bFailure case\u200b\u200b:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Insufficient torque: The DN300 ball valve (requires 2000Nm) is equipped with an F10 interface (maximum 1000Nm), resulting in overload and damage to the actuator.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bImprovement plan\u200b\u200b: Upgrade to F14 interface (torque capacity 3000Nm).<\/span><\/li>\n<\/ul>\n<h3><b>\u00a0EN 558 &#8220;Valve end face and structural length &#8220;<\/b><\/h3>\n<p><b>Core Specifications:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bStructural length series\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Series<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable valve type<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\uc77c\ubc18\uc801\uc778 \uc801\uc6a9 \uc0ac\ub840<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Series 1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">General industrial valves<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Chemical industry, water treatment<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Series 4<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Short valve<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Space-constrained scenarios (ship engine room)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Series 14<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Long valve<\/span><\/td>\n<td><span style=\"font-weight: 400;\">High temperature and high pressure (main steam valve of thermal power station)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bEnd surface processing requirements:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bRa value\u200b\u200b: Sealing surface Ra\u22643.2\u03bcm, non-sealing surface Ra\u226412.5\u03bcm.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bChamfer angle\u200b\u200b: 30\u00b0\u00b12\u00b0 (to prevent scratches on the sealing surface during installation).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>Industry Applications:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">LNG cryogenic valves: Series 4 shortens the structure length and reduces the loss of cooling capacity.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bHydrogenation valve\u200b\u200b: Series 14 has a longer structure and reduces thermal stress concentration.<\/span><\/li>\n<\/ul>\n<h3><b>\u200b\u200bTechnology comparison: EN vs. ASME\/ISO connection standards\u200b\u200b<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Dimensions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN Standard System<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME\/ISO Standards<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Key Differences and Impacts<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Flange Type<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN 1092-1 (PN series) + EN 1759-1 (Class series)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME B16.5\/B16.47 (Class)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN flange thickness tolerance is tighter (\u00b10.3mm vs. \u00b11.0mm), but the procurement cost is 15%~20% higher.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Sealing surface roughness<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ra\u22643.2\u03bcm (EN 1092-1)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ra\u22646.3\u03bcm (ASME B16.5)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN has better sealing performance, but requires special processing equipment (such as mirror lathe).<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bDriver Interface\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN ISO 5211 (F series interface)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ISO 5211 (equivalent)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Fully compatible, no difference.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bStructure length\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN 558 (Series 1\/4\/14)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME B16.10 (Regular\/Short Type)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN Series 4 is 5%~10% shorter than ASME short valves and is more suitable for compact spaces.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h1><b>\u200b\u200bSafety and explosion-proof certification\u200b\u200b<\/b><\/h1>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19586\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/cdb80e75b8d5024a26510f8c6ef9a71.png\" alt=\"Fire and explosion proof, safety valve\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/cdb80e75b8d5024a26510f8c6ef9a71.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/cdb80e75b8d5024a26510f8c6ef9a71-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/cdb80e75b8d5024a26510f8c6ef9a71-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Ensure the safe operation of valves in hazardous environments such as flammable, explosive, and high pressure, in compliance with EU directives (such as ATEX 2014\/34\/EU) and mechanical safety requirements.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Standard No.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Standard Name<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Safety technical requirements<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 1349<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Industrial Process Control Valve Safety<\/span><\/td>\n<td><span style=\"font-weight: 400;\">SIL2\/SIL3 Functional Safety Certification Process<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 1703<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Valve explosion proof certification (ATEX)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Structural gap control for Zone 1\/21 explosive environments (\u22640.2mm)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 15001<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Gas valve safety regulations<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Gas leakage rate \u22640.25ml\/min (methane detection method)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 14382<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Safety relief valve<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Dynamic test method for overpressure response time \u2264 50ms<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">\u200b\u200bCertification association\u200b\u200b: ATEX 2014\/34\/EU directive mandatory reference EN 1703 standard<\/span><\/p>\n<h3><b>EN 1349 &#8220;Safety Requirements for Industrial Process Control Valves&#8221;<\/b><\/h3>\n<p><b>Core technology areas:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bSafety Function Verification\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\uae30\ub2a5<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\ud14c\uc2a4\ud2b8 \ubc29\ubc95<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Eligibility criteria<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Travel limit protection<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Overtravel 10% Repeat 50 times<\/span><\/td>\n<td><span style=\"font-weight: 400;\">No mechanical damage, signal deviation \u2264\u00b11%<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Leakage rate (failure mode)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Test after forced closure (1.1\u00d7 design pressure)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22640.1\u00d7DN (ml\/min)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bVibration test\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Grade<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Frequency range (Hz)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Acceleration (m\/s\u00b2)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Duration (hours)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">A\uae09<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10~150<\/span><\/td>\n<td><span style=\"font-weight: 400;\">20<\/span><\/td>\n<td><span style=\"font-weight: 400;\">24<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\ud074\ub798\uc2a4 B<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10~500<\/span><\/td>\n<td><span style=\"font-weight: 400;\">50<\/span><\/td>\n<td><span style=\"font-weight: 400;\">12<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">\u200b\u200bApplicable scenarios\u200b\u200b: chemical regulating valve, natural gas pressure regulating valve.<\/span><\/p>\n<h3><b>EN 1703 &#8220;Non-metallic material valve explosion-proof certification&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>Core Requirements:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Material flame retardancy:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\uc7ac\uc9c8 \uc720\ud615<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Oxygen Index (OI)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable temperature range (\u2103)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">PTFE<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u226595%<\/span><\/td>\n<td><span style=\"font-weight: 400;\">-50~+260<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Reinforced nylon (PA)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u226528%<\/span><\/td>\n<td><span style=\"font-weight: 400;\">-40~+120<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bStatic Electricity Protection\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Surface resistance \u22641\u00d710\u2076\u03a9 (to prevent static electricity accumulation).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Metal insert grounding resistance \u2264 0.1\u03a9.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Typical applications: Chlorine system valves (PTFE seals), food grade butterfly valves (PA seats).<\/span><\/p>\n<h3><b>EN 15001 &#8220;General Requirements for Gas Explosion-Proof Valves&#8221;\u200b\u200b<\/b><\/h3>\n<ul>\n<li aria-level=\"1\"><b>\u200b\u200bCertification level and scope\u200b\u200b:<\/b><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Explosion-proof grade<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable gas group<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Temperature Class (T-Class)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Maximum surface temperature (\u00b0C)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bII 2G Ex d\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">IIA (Propane)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">T3 (\u2264200\u2103)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">200<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bII 3G Ex e\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">IIB (ethylene)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">T4 (\u2264135\u2103)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">135<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bII 1G Ex ia\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">IIC (Hydrogen)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">T6 (\u226485\u2103)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">85<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>\u200b\u200bKey Tests\u200b\u200b:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bExplosion pressure test\u200b\u200b: At 5 times the maximum working pressure, the shell has no permanent deformation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Explosion-proof gap: \u22640.2mm (IIC grade hydrogen valve).<\/span><\/li>\n<\/ul>\n<h3><b>EN 14382 &#8220;Overpressure Protection Safety Valve&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>\u200b\u200bCore technical parameters\u200b\u200b:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bSet pressure deviation\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\uc555\ub825 \uc218\uc900<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Permissible deviation<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Seat return pressure ratio<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">PN10~PN40<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u00b13%<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u226590% set pressure<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">PN63~PN400<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u00b15%<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u226585% set pressure<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bEmission Capability Verification\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\ubc38\ube0c \uc720\ud615<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Flow coefficient (Kv)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Rated displacement coefficient (%)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Full start<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22651.2\u00d7theoretical value<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u226595%<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Micro-opening<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22650.8\u00d7theoretical value<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u226585%<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">\u200b\u200bApplication scenarios\u200b\u200b: LNG tank pressure relief valve, reactor safety valve.<\/span><\/p>\n<h3><b>EN 13611 &#8220;Safety Requirements for Gas Valves&#8221;\u200b\u200b<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Gas leakage rate: \u22640.01 ml\/min (methane medium, helium detection).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Durability: Leakage rate \u2264 0.05 ml\/min after 20,000 opening and closing cycles.<\/span><\/li>\n<\/ul>\n<h3><b>Technology Comparison: P\u200bEN vs. ASME\/ISO Safety and Explosion-Proof Certifications<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Dimensions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN Standard System<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME\/ISO Standards<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bKey Differences and Impacts\u200b\u200b<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bExplosion-proof grade certification\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 15001\u200b\u200b(II 2G Ex d)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ISO\/IEC 60079-1 (Ex d)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bCertification interoperability\u200b\u200b: EN 15001 and ISO 60079-1 are technically equivalent, but EN requires certification from the EU NB agency, and ISO requires IECEx certification.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bNon-metallic flame retardant<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 1703\u200b\u200b(oxygen index \u226595%)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bISO 4589-2\u200b\u200b (Oxygen Index Classification)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bStandard coordination\u200b\u200b: EN 1703 directly references the ISO 4589-2 test method, but EN additionally requires electrostatic protection (surface resistance \u2264 1\u00d710\u2076\u03a9).<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bSafety valve performance\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 14382\u200b\u200b (Set pressure \u00b13%, Displacement \u226595%)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bASME Section VIII\u200b\u200b (\u00b110%, displacement \u226590%)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bAccuracy difference\u200b\u200b: The EN standard has stricter control on pressure, but ASME allows a larger deviation (suitable for low-cost industrial scenarios).<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bControl valve safety function\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 1349\u200b\u200b (overtravel protection, vibration test)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bANSI\/ISA 75.08\u200b\u200b (partial functional coverage)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Functional coverage: EN 1349 mandates overtravel protection, while ANSI\/ISA 75.08 only recommends it, resulting in EN valves being more reliable but costing +20%.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bGas Valve Safety\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 13611\u200b\u200b (leakage rate \u2264 0.01ml\/min)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bISO 23553-1\u200b\u200b\uff08leakage rate \u2264 0.1ml\/min\uff09<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Leakage limit: EN is 10 times stricter than ISO, but requires helium detection equipment (cost +15%).<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h1><b>Industry-specific valve standards\u200b\u200b<\/b><\/h1>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19605\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/130350d4e6a531b2d79a1d7489d9361.png\" alt=\"Industry-specific valve standards\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/130350d4e6a531b2d79a1d7489d9361.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/130350d4e6a531b2d79a1d7489d9361-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/130350d4e6a531b2d79a1d7489d9361-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Special valve technical specifications are formulated for oil and gas, gas, water treatment, industrial automation and other scenarios to ensure adaptability and safety.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Standard No.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Standard Name<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Industry customization requirements<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 1984<\/span><\/td>\n<td><span style=\"font-weight: 400;\">General requirements for industrial valves<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Basic specifications for chemical\/electricity industries<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 1171<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Cast Iron Industrial Valves<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Water Treatment\/Heating System Valve Selection Guide<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 161<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Gas self-closing valve<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.5mbar pressure differential trigger mechanism for civil gas shut-off valve<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 15714<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Hydraulic Actuator<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Synchronous accuracy of hydraulic cylinders for ships and engineering machinery: \u00b10.1mm<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">Typical application: EN 161 valves for EU domestic gas systems (CE certification required)<\/span><\/p>\n<h3><b>EN 1984 &#8220;Safety Requirements for Industrial Valves&#8221;<\/b><\/h3>\n<p><b>Core technology areas:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bSafety function test\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\uae30\ub2a5<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\ud14c\uc2a4\ud2b8 \ubc29\ubc95<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Eligibility criteria<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Emergency shut-off response time<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Signal trigger to fully closed time<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22642 seconds (repeat 50 times, deviation \u2264\u00b15%)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Fire test<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Flame exposure (1100\u2103, 30 minutes)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Leakage rate \u22640.1\u00d7DN (ml\/min)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Material requirements:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Valve body material: Carbon steel (1.0460) or stainless steel (1.4401), certified to ISO 10474 3.1.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Sealing material: graphite or metal spiral wound gasket (temperature resistance \u2265500\u2103).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Industry Applications: High temperature ball valves in refineries, emergency shut-off valves for oil and gas pipelines.<\/span><\/p>\n<h3><b>EN 1171 &#8220;Design and testing of cast iron valves&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>Core Specifications:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bCast iron grades and corrosion resistance\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Brand<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Tensile strength (MPa)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable medium (pH range)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN-JL1040<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2265400<\/span><\/td>\n<td><span style=\"font-weight: 400;\">5~9 (neutral water quality)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN-JL2040<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2265400 (Ni-Resist)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">2~12 (corrosive media)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bTest requirements\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Shell test: Maintain pressure at 2 times PN for 5 minutes (no leakage).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Durability: Torque increase \u226420% after 10,000 opening and closing cycles.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u200b\u200bApplication scenarios\u200b\u200b: Municipal water treatment butterfly valve, chemical acid-resistant gate valve.<\/span><\/p>\n<h3><b>EN 161 &#8220;Automatic closing function of gas valves&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>\u200b\u200bKey Requirements\u200b\u200b:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bShutdown conditions\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Trigger signal<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Response time<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Leakage rate (after closing)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Pressure exceeds limit (1.5\u00d7PN)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22641 second<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22640.01 ml\/min (methane)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Temperature exceeds limit (150\u00b0C)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22643\ucd08<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22640.05 ml\/min<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Material flame retardancy:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">The oxygen index of the valve body material is \u226528% (ISO 4589-2).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Protection level of electrical components \u2265 IP67 (EN 60529).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u200b\u200bTypical applications\u200b\u200b: safety valves for natural gas pressure regulating stations, front valves for household gas meters.<\/span><\/p>\n<h3><b>EN 15714 &#8220;Actuator Test Standard&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>Core content:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Test items:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Project<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Test conditions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Acceptance Criteria<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Overload protection<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1.5\u00d7 rated torque 10 times continuously<\/span><\/td>\n<td><span style=\"font-weight: 400;\">No structural deformation, current fluctuation \u2264\u00b110%<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Waterproof<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Soak in 1 meter water for 30 minutes<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Internal humidity \u226485%<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Low temperature starting torque<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Tested at -40\u2103<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Starting torque \u2264 150% of normal temperature value<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">\u200b\u200bIndustry applications\u200b\u200b: Chemical control valve electric actuator, hydropower station hydraulic drive device.<\/span><\/p>\n<h3><b>\u200b\u200bTechnology comparison: EN vs. ASME\/ISO industry standards\u200b\u200b<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Dimensions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN Standard System<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME\/ISO Standards<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bKey Differences and Impacts\u200b\u200b<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bGas Safety Valve\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 161\u200b\u200b (closing time \u2264 1 second, leakage \u2264 0.01ml\/min)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bISO 23553-1\u200b\u200b (closing time \u2264 3 seconds, leakage \u2264 0.1ml\/min)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN has faster response and tighter leakage control, but the actuator cost is increased by 20%.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bCast Iron Valves\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 1171\u200b\u200b (pH 2~12 resistant, Ni-Resist cast iron)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bAWWA C500\u200b\u200b (pH 5~9 resistant, ordinary cast iron)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN is suitable for highly corrosive scenarios, and the material cost is increased by 30%.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bExecutive Agency\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 15714\u200b\u200b (mandatory IP67 waterproof)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bASME B16.34\u200b\u200b (no mandatory requirement for waterproofing)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN is suitable for marine\/humid environments and requires sealing process upgrade (cost +15%).<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bIndustrial Valve Safety\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 1984\u200b\u200b (fire protection for 30 minutes, leakage \u2264 0.1\u00d7DN)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">API 607 \u200b\u200b(fire protection for 15 minutes, leakage \u2264 0.5 \u00d7 DN)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN has stronger fire resistance, but requires a double-layer sealing structure (cost +25%).<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h1><b>\u00a0\u200bSanitation and drinking water standards\u200b\u200b<\/b><\/h1>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19587\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/68e217fa17048a8adfff7e32bb80666.png\" alt=\"Sanitation and Drinking Water Standards\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/68e217fa17048a8adfff7e32bb80666.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/68e217fa17048a8adfff7e32bb80666-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/68e217fa17048a8adfff7e32bb80666-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/>\u00a0<span style=\"font-weight: 400;\">Ensure that the valve material is safe and non-toxic, the surface is clean, prevent the growth of microorganisms, and meet the strict regulations of drinking water hygiene and food industry<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Standard No.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Standard Name<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Hygiene technical requirements<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 1717<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Drinking water backflow prevention<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Air gap \u226520mm or mechanical double blocking<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 13658<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Drinking water valve materials<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Lead-free copper alloy (CuZn37Pb-free) surface roughness Ra\u22640.8\u03bcm<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 15664<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Chlorine resistance of water treatment valves<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Annual corrosion rate under 50ppm sodium hypochlorite solution \u22640.1mm<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 14420<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Quick-release clamp interface<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Dimensional tolerance and surface electrolytic polishing of 3A sanitary clamps<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">\u200b\u200bCertification marks\u200b\u200b: ACS (UK), DVGW (Germany), KTW (EU Chemical Compatibility)<\/span><\/p>\n<h3><b>EN 12567 Hygienic requirements for valves in drinking water systems<\/b><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19588\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/f63a776a72cbbf137fbe6973503e8ef.png\" alt=\"Drinking water system valves\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/f63a776a72cbbf137fbe6973503e8ef.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/f63a776a72cbbf137fbe6973503e8ef-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/f63a776a72cbbf137fbe6973503e8ef-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><b>Core technology areas:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Material safety:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\uc7ac\uc9c8 \uc720\ud615<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Heavy metal dissolution limit (\u03bcg\/L)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable temperature range (\u2103)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Stainless steel (1.4404)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Lead \u2264 5, Cadmium \u2264 0.5<\/span><\/td>\n<td><span style=\"font-weight: 400;\">-20~+150<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Food grade plastic (PE)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Total organic matter dissolved \u2264 0.1 mg\/L<\/span><\/td>\n<td><span style=\"font-weight: 400;\">-40~+80<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Surface treatment:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">The contact surface roughness Ra\u22640.8\u03bcm (electrolytic polishing or mechanical polishing).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">No dead angle design (inner corner radius \u2265 3mm).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u200b\u200bIndustry applications\u200b\u200b: butterfly valves in drinking water treatment plants, ball valves in household water purifiers.<\/span><\/p>\n<h3><b>EN 1717 &#8220;Prevention of backflow contamination of drinking water &#8220;<\/b><\/h3>\n<p><b>Core Specifications:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bBackflow prevention device\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\uc720\ud615<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable scenarios<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Leakage rate (reverse pressure 1.5\u00d7PN)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Decompression type (Type EA)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Municipal water supply network<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22640.1 ml\/min<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Vacuum Breaking Type (Type AB)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Industrial equipment connection points<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22640.5 ml\/min<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bTest requirements\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Reverse osmosis test with simulated contaminated liquid (24 hours duration).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">The valve sealing surface must be resistant to chloride ion corrosion (Cl\u207b\u2264250ppm).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Application scenarios\u200b\u200b: Hospital water supply system, food processing plant water inlet valve.<\/span><\/p>\n<h3><b>\u200b\u200bEN 1489 &#8220;Hygienic requirements for valves for building use&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>\u200b\u200bKey Requirements\u200b\u200b:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Material biocompatibility:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Passed ISO 10993-5 cytotoxicity test (inhibition rate \u2264 20%).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">No plasticizer (phthalates \u2264 0.1%).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bCleaning and disinfection\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Disinfection methods<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Endurance test<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Eligibility criteria<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">High temperature steam (121\u00b0C)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">30 minutes cycle \u00d7 50 times<\/span><\/td>\n<td><span style=\"font-weight: 400;\">The sealing surface has no deformation, and the leakage rate is \u22640.01\u00d7DN<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Chemical disinfection (sodium hypochlorite)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Concentration 100ppm, soak for 24 hours<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Material weight loss \u2264 0.1%<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">Typical applications: diaphragm valves in hospital sterile water systems, CIP (cleaning in place) valves in pharmaceutical factories.<\/span><\/p>\n<h3><b>\u200b\u200bEC 1935\/2004 &#8220;Food Contact Materials Regulation&#8221;\u200b\u200b<\/b><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19589\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/d9ee20ea7268634d03460d652351a1d.png\" alt=\"Food-grade hygienic valve system\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/d9ee20ea7268634d03460d652351a1d.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/d9ee20ea7268634d03460d652351a1d-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/d9ee20ea7268634d03460d652351a1d-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><b>Core Requirements:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bMaterial Migration Limits\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Substance<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Migration limit (mg\/kg)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Test conditions (food simulant)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">formaldehyde<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u226415<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10% ethanol, 40\u2103\u00d710 days<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u954d<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22640.1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">3% acetic acid, 40\u2103\u00d710 days<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bTraceability\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Material batches must be accompanied by an FCM (Food Contact Material) declaration document (in compliance with EC 2023\/2006).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u200b\u200bIndustry Applications\u200b\u200b: Dairy processing valves, beverage filling valves.<\/span><\/p>\n<h3><b>\u200b\u200bTechnology comparison: EN vs. ASME\/ISO sanitation standards\u200b\u200b<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Dimensions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN Standard System<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME\/ISO Standards<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bKey Differences and Impacts\u200b\u200b<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bMaterial Safety\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 12567\u200b\u200b (heavy metal release limits)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bASME BPE\u200b\u200b (no dissolution limits, surface finish only)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN directly restricts the release of toxic substances, while ASME focuses more on physical cleanliness.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Surface roughness<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ra\u22640.8\u03bcm (EN 12567)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ra\u22640.5\u03bcm (ASME BPE)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME requires a higher finish, but EN can meet food grade requirements through Ra\u22640.8\u03bcm+electrolytic polishing.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bAnti-backflow design\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 1717\u200b\u200b (leakage rate \u2264 0.1ml\/min)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bASSE 1013\u200b\u200b\uff08leakage rate \u22641.0ml\/min\uff09<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN has better anti-pollution performance, but the valve structure is complex (cost +20%).<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bDisinfection resistance\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 1489\u200b\u200b (high temperature steam 50 cycles)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bISO 15848\u200b\u200b (no specific disinfection test)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN is customized for the medical\/pharmaceutical industry, and ASME\/ISO requires additional verification.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bFood Contact Certification\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEC 1935\/2004\u200b\u200b (migration limit values \u200b\u200b+ traceability documentation)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bFDA 21 CFR\u200b\u200b (value only, no traceability requirements)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN regulations are stricter and material compliance costs are 15% to 25% higher.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h1><b>\u200b\u200bLow Temperature and Special Media\u200b\u200b<\/b><\/h1>\n<figure id=\"attachment_19590\" aria-describedby=\"caption-attachment-19590\" style=\"width: 2000px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19590 size-full\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/571a2c5a917b3a642746e460a3733fe.png\" alt=\"JH-\uadf9\uc800\uc628 \uac8c\uc774\ud2b8 \ubc38\ube0c\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/571a2c5a917b3a642746e460a3733fe.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/571a2c5a917b3a642746e460a3733fe-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/571a2c5a917b3a642746e460a3733fe-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><figcaption id=\"caption-attachment-19590\" class=\"wp-caption-text\"><a href=\"\/cryogenic-gate-valve\/\">JH-\uadf9\uc800\uc628 \uac8c\uc774\ud2b8 \ubc38\ube0c<\/a><\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">It covers complex working conditions such as extreme low temperature, corrosive and toxic media, ensuring the reliability of valve materials, seals and structural designs.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Standard No.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Standard Name<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Extreme working conditions requirements<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 1626<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Cryogenic valve design and testing<\/span><\/td>\n<td><span style=\"font-weight: 400;\">-196\u2103 Liquid Nitrogen Environment Sealing Verification<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 14636<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Supercritical CO\u2082 valve<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Material creep test at 31.1\u2103\/7.38MPa critical point<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 12570<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Valve operating torque measurement<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Maximum opening and closing torque under low temperature conditions \u2264100Nm<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 14432<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Chemical resistance of plastic valves<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Annual permeability test of PVDF in 98% sulfuric acid<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">Material breakthrough: EN 1626 requires low-temperature valve body materials Akv (-196\u2103) \u2265 27J<\/span><\/p>\n<h3><b>\u200b\u200bEN 1626 &#8220;Design and testing of valves for cryogenic containers&#8221;\u200b\u200b<\/b><\/h3>\n<figure id=\"attachment_19593\" aria-describedby=\"caption-attachment-19593\" style=\"width: 2000px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19593 size-full\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/a7c6224a8d510ce52de4d60d7c99edd.png\" alt=\"Cryogenic valve cryogenic test\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/a7c6224a8d510ce52de4d60d7c99edd.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/a7c6224a8d510ce52de4d60d7c99edd-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/a7c6224a8d510ce52de4d60d7c99edd-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><figcaption id=\"caption-attachment-19593\" class=\"wp-caption-text\"><a href=\"\/cryogenic-test\/\">JH-Cryogenic Test<\/a><\/figcaption><\/figure>\n<p><b>Core Requirements:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Material low temperature toughness\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\uc7ac\uc9c8 \uc720\ud615<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Impact energy (-196\u2103)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable temperature lower limit (\u2103)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Austenitic stainless steel<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u226540J (ISO 148)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">-196<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Nickel-based alloy (Inconel 718)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u226560J<\/span><\/td>\n<td><span style=\"font-weight: 400;\">-253<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Seal Design:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Bellows seal (cycle life \u2265 5000 times, leakage rate \u2264 10\u207b\u2076 mbar\u00b7l\/s).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Stem extension design (avoids cold bridge effect).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><b>\u200b\u200bEN 14636\u300aCryogenic valve operating torque test\u300b\u200b\u200b<\/b><\/h3>\n<p>&nbsp;<\/p>\n<p><b>\u200b\u200bTest conditions\u200b\u200b:<\/b><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Temperature (\u2103)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Lubrication status<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Allowable torque increase<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">-196<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Dry Friction<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2264200% of normal temperature torque<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">-50<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Low temperature grease<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2264150% of normal temperature torque<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">\u200b\u200bIndustry applications\u200b\u200b: liquid hydrogen storage and transportation valves, aerospace liquid oxygen delivery valves.<\/span><\/p>\n<h3><b>\u200b\u200bEN 12570 &#8220;Valve operating force test&#8221; (applicable to corrosive media)<\/b><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19591\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/cd6dc754ac27906effb57de1892c3a8.png\" alt=\"Cryogenic valve operation test\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/cd6dc754ac27906effb57de1892c3a8.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/cd6dc754ac27906effb57de1892c3a8-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/cd6dc754ac27906effb57de1892c3a8-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><b>Core Requirements:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bOperating force limitations\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\ubc38\ube0c \uc720\ud615<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Maximum handwheel operating force (N)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Electric actuator torque (Nm)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">DN50 stop valve<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2264350<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2264200<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">DN200 ball valve<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2264800<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22641000<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bCorrosion-resistant lubrication\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">The sealing grease must pass the ISO 6743-9 acid and alkali resistance test (weight loss \u2264 1%).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><b>\u200b\u200bEN 14432\u300aChemical Corrosion Resistance of Lined Valves\u300b<\/b><\/h3>\n<h3><span style=\"font-weight: 400;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19592\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/bb5a39303eb82290f6ad42c3ec9e913.png\" alt=\"Chemical resistance test of cryogenic valves\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/bb5a39303eb82290f6ad42c3ec9e913.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/bb5a39303eb82290f6ad42c3ec9e913-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/bb5a39303eb82290f6ad42c3ec9e913-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/>\u200b\u200b<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bLining material verification\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Lining type<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Temperature resistance (\u2103)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Chemical resistance (example)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Test method (EN 14432 Annex B)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">PTFE<\/span><\/td>\n<td><span style=\"font-weight: 400;\">-50~150<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Concentrated sulfuric acid (98%), hydrochloric acid (37%)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">After 720 hours of immersion, the volume expansion is \u22645%<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">PFA<\/span><\/td>\n<td><span style=\"font-weight: 400;\">-200~260<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Hydrofluoric acid (40%), nitric acid (65%)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Osmotic pressure test (1.5\u00d7PN)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">Industry Applications: Diaphragm valves for chlor-alkali industry, high purity acid valves for semiconductor industry.<\/span><\/p>\n<h3><b>\u200b\u200bTechnical comparison: EN vs. ASME\/API standards\u200b\u200b<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Dimensions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN Standard System<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME\/API Standards<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bKey Differences and Impacts\u200b\u200b<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bCryogenic Material Toughness\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 1626\u200b\u200b (Forced impact energy \u2265 40J, -196\u2103)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bASME B31.3\u200b\u200b(impact energy \u2265 27J, -196\u2103)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN materials are more resistant to low-temperature brittleness, but the cost is 10%~15% higher.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bOperational force test\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 12570\u200b\u200b (mandatory manual operating force \u2264 350N)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bAPI 6D\u200b\u200b (no mandatory limit, only recommended value)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN ensures the safety of manual operations, and API relies on experience-based design.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bLined Valves\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 14432\u200b\u200b (Mandatory penetration test + expansion rate limit)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bAPI 598\u200b\u200b (leak test only)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN is more stringent, but the lining process costs 20% more.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bLow temperature seal\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 14636\u200b\u200b (torque increase \u2264 200%)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bMSS SP-134\u200b\u200b (no low temperature torque test standard)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN provides quantitative indicators to reduce the risk of low-temperature seizure.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h1><b>Quality and traceability system\u200b\u200b<\/b><\/h1>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19596\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/adb482b078b8a01dda2ae855b7cf0bc.png\" alt=\"Valve quality inspection and valve traceability\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/adb482b078b8a01dda2ae855b7cf0bc.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/adb482b078b8a01dda2ae855b7cf0bc-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/adb482b078b8a01dda2ae855b7cf0bc-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Establish a full-process quality control and traceability mechanism from raw materials to finished products to ensure that valve manufacturing complies with design specifications and regulatory requirements.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Standard No.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Standard Name<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Quality management requirements<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 10204<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Material traceability<\/span><\/td>\n<td><span style=\"font-weight: 400;\">3.1\/3.2 Correspondence between certificate and PED certification<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 10228<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Nondestructive testing specifications<\/span><\/td>\n<td><span style=\"font-weight: 400;\">RT testing of castings (EN 12681), UT testing of welds (EN ISO 17640)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 10246<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Steel pipe matching standards<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Seamless steel pipe tolerance and valve flow channel matching rules<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 10217<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Welding procedure qualification<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Covers TIG\/MIG\/submerged arc welding and other process certifications<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">\u200b\u200bDigital upgrade\u200b\u200b: EN 10204-3.3 supports blockchain material traceability (new in the 2023 version)<\/span><\/p>\n<h3><b>EN 10204\u300aTypes of Material Certification\u300b\u200b\u200b<\/b><\/h3>\n<p><b>Core content:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">\u200b\u200bCertificate classification and scope of application\u200b\u200b:<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Certificate Type<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Testing Party<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Scope of application<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">3.1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Steel Plant Self-Inspection<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Conventional industrial valves (PN10~PN40)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">3.2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Independent third-party laboratory<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Nuclear power, PED Category III\/IV valves<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bDocument requirements\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Chemical composition, mechanical properties, NDT report (only required for 3.2 certificate).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>\u200b\u200bIndustry Applications<\/b><span style=\"font-weight: 400;\">\u200b\u200b: Nuclear power main steam valve (EN 10204 3.2 mandatory), municipal water valve (3.1 certificate).<\/span><\/p>\n<h3><b>\u200b\u200bEN 10228 &#8220;Non-destructive testing of forgings&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>Core testing requirements<\/b><span style=\"font-weight: 400;\">:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bTest methods and standards\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Detection Methods<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable defect types<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Acceptance Criteria<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Ultrasonic Testing (UT)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Internal cracks, inclusions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Defect echo \u226420% DAC curve<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Magnetic Particle Testing (MT)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Surface cracks<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Crack length \u22645mm, linear defects prohibited<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bDetection coverage\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Nuclear power forgings: 100% UT+MT.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Conventional forgings: UT spot check \u2265 20%.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><b>EN 10246 &#8220;Non-destructive testing of steel tubes&#8221;\u200b\u200b<\/b><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19595\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/c80dd3c1df827a6d2794f55ac0fd95c.png\" alt=\"Steel pipe valves have no detection\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/c80dd3c1df827a6d2794f55ac0fd95c.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/c80dd3c1df827a6d2794f55ac0fd95c-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/c80dd3c1df827a6d2794f55ac0fd95c-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><b>\u200b\u200bKey Specifications\u200b\u200b:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">\u200b\u200bDetection type and parameters\u200b\u200b:<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Detection Methods<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable steel pipe type<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Detection sensitivity<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Eddy Current Testing (ET)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Austenitic stainless steel pipe<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Defect depth \u2265 0.5mm<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Radiographic Testing (RT)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Carbon Steel Welded Pipe<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Pore \u200b\u200bdiameter \u22642mm, \u22643 per meter<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>\u200b\u200bApplication scenarios\u200b\u200b<\/b><span style=\"font-weight: 400;\">: high-pressure boiler tubes, chemical corrosion-resistant pipelines.<\/span><\/p>\n<h3><b>EN 10217 &#8220;Technical conditions for welded steel pipes&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>Core Requirements:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bWelding process and testing\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\ub9e4\uac1c\ubcc0\uc218<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Require<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Welding methods<\/span><\/td>\n<td><span style=\"font-weight: 400;\">TIG welding (stainless steel), SAW welding (carbon steel)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Weld inspection<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100% RT (EN 1435) or UT (EN 1714)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Hardness limit<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Welding area \u2264350 HV10<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">\u200b\u200bIndustry applications\u200b\u200b: petroleum cracking furnace pipes, ship compressed air pipelines.<\/span><\/p>\n<h3><b>\u200b\u200bTechnology comparison: EN vs. ASME\/ISO quality systems\u200b\u200b<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Dimensions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN Standard System<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME\/ISO Standards<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bKey Differences and Impacts\u200b\u200b<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bMaterial Certification\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 10204 3.2\u200b\u200b (Third Party Mandatory)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bASME Section II\u200b\u200b (Steel Plant Self-Inspection)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN data is more reliable but costs 25% more, while ASME relies on the factory quality assurance system.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bForging Inspection\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 10228\u200b\u200b(UT+MT, crack \u22645mm)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bASME SA-388\u200b\u200b (UT, crack \u22648mm)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN has tighter defect tolerance and the scrap rate is 10%~15% higher than ASME.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bSteel pipe testing\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 10246\u200b\u200b\uff08ET+RT, pores \u2264 2mm\uff09<\/span><\/td>\n<td><span style=\"font-weight: 400;\">API 5L (RT only, pores \u2264 3mm)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN detection has higher sensitivity, but the detection time increases by 30%.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bWelding process\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 10217\u200b\u200b (Mandatory TIG\/SAW welding + hardness control)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bASME B31.3\u200b\u200b (manual welding is allowed)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN welding quality is more stable, while ASME is more flexible but depends on the welder&#8217;s skills.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bTraceability\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Full batch traceability (EN 10204 3.2)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Traceability by furnace number (ASME material)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN traceability is more granular, but document management costs are 20% higher.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h1><b>Actuators and Automation\u200b\u200b<\/b><\/h1>\n<p><span style=\"font-weight: 400;\">Ensure the compatibility, reliability and automation control accuracy of actuators (pneumatic, electric, hydraulic) and valves to meet the needs of efficient regulation of industrial processes.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Standard No.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Standard Name<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Control technology requirements<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN ISO 5211<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Driver interface<\/span><\/td>\n<td><span style=\"font-weight: 400;\">F10 flange maximum torque 1200Nm<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 15714-1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\uacf5\uc555 \uc561\ucd94\uc5d0\uc774\ud130<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Linearity error at 0.5~7bar gas source pressure \u2264\u00b11.5%<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 15714-2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Electric actuator<\/span><\/td>\n<td><span style=\"font-weight: 400;\">IP68 protection, EEx d explosion-proof certification integrated solution<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 60534<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Control valve flow characteristics<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Mathematical verification model of equal percentage\/linear characteristic curve<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">\u200b\u200bIntelligent compatibility\u200b\u200b: EN 15714-3:2022 adds IoT interface protocol (supports OPC UA\/Modbus)<\/span><\/p>\n<h3><b>EN ISO 5211 &#8220;Valve drive installation interface&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>Core technology areas:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Interface size and torque capacity:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Interface code<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Square drive head dimensions (mm)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Maximum torque (Nm)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable actuator type<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">F03<\/span><\/td>\n<td><span style=\"font-weight: 400;\">15\u00d715<\/span><\/td>\n<td><span style=\"font-weight: 400;\">50<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Small Pneumatic Actuators<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">F10<\/span><\/td>\n<td><span style=\"font-weight: 400;\">50\u00d750<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1000<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Electric actuator (DN200 valve)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">F16<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100\u00d7100<\/span><\/td>\n<td><span style=\"font-weight: 400;\">5000<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Hydraulic actuator (DN600 and above)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bMounting tolerance\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">The coaxiality error of the drive shaft is \u22640.1mm\/m, and the parallelism of the flange surface is \u22640.05mm.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>\u200b\u200bIndustry applications\u200b\u200b<\/b><span style=\"font-weight: 400;\">: Chemical regulating valves, hydraulic gate valves in hydropower stations.<\/span><\/p>\n<h3><b>\u200b\u200bEN 15714-1\u300aTesting of Pneumatic Actuators\u300b\u200b\u200b<\/b><\/h3>\n<figure id=\"attachment_19597\" aria-describedby=\"caption-attachment-19597\" style=\"width: 2000px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19597 size-full\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/c50baa71cdb03afedb187dce774080b.png\" alt=\"Pneumatic control valve\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/c50baa71cdb03afedb187dce774080b.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/c50baa71cdb03afedb187dce774080b-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/c50baa71cdb03afedb187dce774080b-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><figcaption id=\"caption-attachment-19597\" class=\"wp-caption-text\"><a href=\"\/single-seat-control-valve\/\">JH-Pneumatic control valve<\/a><\/figcaption><\/figure>\n<p><b>Core test requirements:<\/b><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Test items<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Test conditions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Acceptance Criteria<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bAir tightness test\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.6MPa air pressure for 5 minutes<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Pressure drop \u2264 0.01MPa<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bCycle life\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100,000 opening and closing times (frequency \u2265 1Hz)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Leakage rate \u22640.1\u00d7DN, torque fluctuation \u2264\u00b110%<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bLow Temperature Performance\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Operate 50 times at -40\u2103<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Opening and closing time deviation \u2264\u00b115%<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>\u200b\u200bTypical applications<\/b><span style=\"font-weight: 400;\">\u200b\u200b: natural gas pressure regulating valve, food grade diaphragm valve.<\/span><\/p>\n<h3><b>\u00a0EN 15714-2\u300aElectric Actuator Test\u300b\u200b\u200b<\/b><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19598\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/279ae14bc3b6bab43b888f8100c91c1.png\" alt=\"Electric Actuator\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/279ae14bc3b6bab43b888f8100c91c1.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/279ae14bc3b6bab43b888f8100c91c1-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/279ae14bc3b6bab43b888f8100c91c1-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><b>Core test requirements:<\/b><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Test items<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Test conditions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Acceptance Criteria<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bOverload protection\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1.5 times rated torque for 10 times continuously<\/span><\/td>\n<td><span style=\"font-weight: 400;\">No structural deformation, current fluctuation \u2264\u00b110%<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Waterproof performance<\/span><\/td>\n<td><span style=\"font-weight: 400;\">IP67 protection (1 meter underwater, 30 minutes)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Internal humidity \u226485%<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEMC anti-interference\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Operate under 10V\/m RF interference<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Position feedback error \u2264\u00b11%<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>\u200b\u200bIndustry application\u200b\u200b<\/b><span style=\"font-weight: 400;\">: nuclear power main steam valve, petrochemical regulating valve.<\/span><\/p>\n<h3><b>\u200b\u200bEN 60534 &#8220;Industrial Process Control Valves&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>Key content:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bFlow characteristics verification\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Flow characteristics<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable scenarios<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Permissible deviation<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Equal percentage<\/span><\/td>\n<td><span style=\"font-weight: 400;\">High-precision regulation (chemical industry)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Flow coefficient (Cv) \u00b15%<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Quick opening type<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Switch control (water treatment)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Stroke-flow curve \u00b18%<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bStep response test\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Input signal changes<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Response time<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Overshoot<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">0~100%<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22643 seconds (regulating valve)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22645% setting value<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>\u200b\u200bApplication scenarios<\/b><span style=\"font-weight: 400;\">\u200b\u200b: Flow control valves in refineries, pressure regulating valves in pharmaceutical factories.<\/span><\/p>\n<h3><b>\u200b\u200bTechnology comparison: EN vs. IEC\/ISA standards\u200b\u200b<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Dimensions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN Standard System<\/span><\/td>\n<td><span style=\"font-weight: 400;\">IEC\/ISA Standards<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bKey Differences and Impacts\u200b\u200b<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bDriver Interface\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN ISO 5211\u200b\u200b (F series interface, torque classification)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bIEC 60534-6\u200b\u200b (similar interface, no torque classification)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN provides quantified torque capacity, which makes selection more accurate, but requires additional design verification.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bPneumatic Actuators\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 15714-1\u200b\u200b (100,000 cycle life test)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ISA 75.10 (50,000 cycles)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN has higher reliability requirements, but the actuator cost increases by 20%.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bElectric Actuator\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 15714-2\u200b\u200b (mandatory IP67 waterproof)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bIEC 60534-8\u200b\u200b (IP65 recommended)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN is suitable for wet\/outdoor scenarios (such as offshore platforms), and IEC is suitable for general industry.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bControl Valve Performance\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 60534\u200b\u200b(Step response overshoot \u22645%)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ISA 75.25 (overshoot \u2264 10%)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN has higher control accuracy, but has stricter requirements on the dynamic response of the actuator.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h1><b>Maintenance and Renovation Standards\u200b\u200b<\/b><\/h1>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19599\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/b0cb7fd078a9dc04ee750584e89b5fd.png\" alt=\"Valve Repair and Modification Standards\u200b\u200b\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/b0cb7fd078a9dc04ee750584e89b5fd.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/b0cb7fd078a9dc04ee750584e89b5fd-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/b0cb7fd078a9dc04ee750584e89b5fd-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Standardize the maintenance and modification process of valves and related piping systems to ensure the integrity, safety and service life of the repaired equipment<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Standard No.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Standard Name<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Maintenance technical requirements<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 13480<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Pipeline system renovation<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Preheating temperature control for online maintenance welding<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 12952<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Boiler Valve Repair<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Post Weld Heat Treatment (PWHT) Temperature Profile Verification<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 13445<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Pressure vessel supporting valve<\/span><\/td>\n<td><span style=\"font-weight: 400;\">The hydraulic test pressure coefficient after modification is 1.33\u00d7MAWP<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 10253<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Welding repair process<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Defect grinding depth \u2264 20% wall thickness repair allowable range<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">\u200b\u200bEconomic value\u200b\u200b: Valves repaired according to EN 13480 can extend their service life by 15 years (annual NDT inspection required)<\/span><\/p>\n<h3><b>\u200bEN 13480 &#8220;Repair and replacement of metal industrial pipes&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>Core Areas:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Maintenance process requirements:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Maintenance items<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Technical requirements<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable scenarios<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Partial pipe replacement<\/span><\/td>\n<td><span style=\"font-weight: 400;\">The new pipe material is chemically compatible with the old pipe (EN 10027-1)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Corroded pipes (thickness loss \u2265 20%)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Welding repair<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Procedure qualification according to EN ISO 15614, Post Weld Heat Treatment (PWHT)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">High temperature steam pipe crack repair<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bTesting and verification\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">The replacement section needs to be 100% RT (EN 1435) or PT\/MT (EN 1291) tested, with crack defects \u2264 5mm.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><b>\u200b\u200bEN 12952 &#8220;Maintenance of water tube boilers and auxiliary equipment&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>\u200b\u200bKey Requirements\u200b\u200b:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bBoiler Valve Repair\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Project<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Maintenance standards<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Acceptance indicators<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Safety valve repair<\/span><\/td>\n<td><span style=\"font-weight: 400;\">The roughness of the sealing surface after grinding is Ra\u22640.4\u03bcm<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Trigger pressure deviation \u2264\u00b12%<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Welding boiler pipes<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Preheating temperature \u2265150\u2103, interlayer temperature \u2264300\u2103<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Weld impact energy \u2265 27J (20\u2103)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bNDT Testing\u200b\u200b\uff1a<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Repaired area 100% UT (EN 1714) + RT (EN 1435), slag inclusion length \u2264 3mm.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><b>EN 13445\u300aMaintenance of non-flame contact pressure vessels\u300b\u200b\u200b<\/b><\/h3>\n<p><b>Core Specifications:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">\u200b\u200bPressure vessel valve modification\u200b\u200b:<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Renovation Type<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Technical requirements<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Acceptance Criteria<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Safety valve upgrade<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Pressure relief capacity \u2265 115% of original design<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Tested according to EN ISO 4126-1<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Sealing surface relining<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Lining material temperature resistance \u2265 design temperature + 50\u2103<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Helium leak rate \u226410\u207b\u2076 mbar\u00b7l\/s<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bImpact test exemptions\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">When the material has not changed and the service temperature is \u2265-10\u2103, the -20\u2103 impact test can be exempted (risk assessment report is required).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><b>EN 10253 &#8220;Maintenance requirements for butt-welded pipe joints&#8221;\u200b\u200b<\/b><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19600\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/5a2547a98e2e58239c70754d6319680.png\" alt=\"Welding pipeline and valve interface maintenance\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/5a2547a98e2e58239c70754d6319680.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/5a2547a98e2e58239c70754d6319680-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/5a2547a98e2e58239c70754d6319680-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><b>Core content:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bWelding damaged joints\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Repair method<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Process requirements<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable defect types<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Grinding and repair<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Wall thickness loss \u226410% of original thickness, smooth transition (slope 1:4)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Surface pores and scratches<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Repair welding<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Preheating temperature \u2265 100\u2103, weld NDT inspection (UT+RT)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Internal cracks (depth \u2265 2mm)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bAlternative fitting grades\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Grade<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Testing requirements<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Applicable pressure (PN)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u0826A<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Visual inspection<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PN10~PN16<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u0826D<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100% RT+UT<\/span><\/td>\n<td><span style=\"font-weight: 400;\">PN63~PN100<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><b>\u200b\u200bTechnical comparison: EN vs. ASME\/API repair standards\u200b\u200b<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Dimensions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN Standard System<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ASME\/API Standards<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bKey Differences and Impacts\u200b\u200b<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bWelding process\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 13480\u200b\u200b (Mandatory PWHT, preheating \u2265 150\u00b0C)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bASME B31.3\u200b\u200b(Partial exemption of PWHT is allowed)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">The EN process is more stringent and reduces residual stress, but the working hours increase by 30%.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bNDT coverage\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 12952\u200b\u200b (Repair area 100% RT+UT)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bAPI 570\u200b\u200b(RT sampling \u226520%)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN testing costs 50% higher, but the defect detection rate increases by 40%.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bImpact test exemption\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 13445\u200b\u200b (Exemption from risk assessment of working conditions)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bASME VIII-1\u200b\u200b (Mandatory impact test)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN is more flexible, while ASME procedures are more conservative.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bWeld repair\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 10253\u200b\u200b (wall thickness loss \u2264 10% can be ground)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bASME B31.1\u200b\u200b (repair is allowed if the wall thickness loss is \u22645%)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN allows a wider range of repairs, while ASME has stricter requirements.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h1><b>Environmental protection and energy efficiency standards<\/b><\/h1>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19602\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/defa192e90c4899baad5e904772eba0.png\" alt=\"Environmental protection of valves and environmental protection of chemical plant emissions\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/defa192e90c4899baad5e904772eba0.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/defa192e90c4899baad5e904772eba0-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/defa192e90c4899baad5e904772eba0-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Reduce energy consumption and environmental pollution of valves and related equipment to meet the European Green Deal and carbon reduction targets.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Standard No.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Standard Name<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Green technology requirements<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 16247<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Valve Energy Efficiency Assessment<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Relationship model between pressure loss coefficient Kv value and system energy consumption<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 14394<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Low fugitive emissions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">TA-Luft certified integrated solution (leakage rate \u2264 50ppm)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 45544<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Toxic media seal<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Design specification for double stuffing box for benzene medium<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">EN 14015<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Tank breathing valve<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Structural design requirements for VOC recovery efficiency \u2265 95%<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">\u200b\u200bCertification linkage\u200b\u200b: Passing EN 14394 can simultaneously obtain ISO 15848-1 certification<\/span><\/p>\n<h3><b>EN 16247 Energy Audit<\/b><\/h3>\n<p><b>Core Requirements:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Energy efficiency evaluation indicators:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\ubc38\ube0c \uc720\ud615<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Unit energy consumption (kWh\/year\u00b7DN)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Optimization target (%)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Control valve<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22641500<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Reduce by 15%~30%<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Stop valve<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2264800<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Reduce by 10%~20%<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bAudit Process\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bData Collection\u200b\u200b: Continuously monitor valve pressure drop, leakage rate, and drive energy consumption (at least 30 days).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Improvement plan: adopt low resistance design and intelligent control algorithm (such as PID optimization).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>\u200b\u200bIndustry applications<\/b><span style=\"font-weight: 400;\">\u200b\u200b: Energy-saving transformation of steam system valves in chemical plants, and optimization of pump-valve linkage in water treatment plants.<\/span><\/p>\n<h3><b>EN 14394 &#8220;Emission Control for Actuated Valves in Internal Combustion Engines&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>\u200b\u200bKey Specifications\u200b\u200b:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bEmission limit values\u200b\u200b:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Pollutants<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Limit value (g\/kWh)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Test conditions (ISO 8178)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Nitrogen oxides (NOx)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22643.5<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Full load cycle<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Particulate matter (PM)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22640.1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Steady state<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bTechnical measures\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bAfter-treatment system\u200b\u200b: SCR (Selective Catalytic Reduction) or DPF (Particulate Filter).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u200b\u200bFuel Optimization\u200b\u200b: Use of biodiesel (EN 14214 standard).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u200b\u200b<\/span><b>Typical applications<\/b><span style=\"font-weight: 400;\">\u200b\u200b: Mobile hydraulic valve power units (e.g. port loading and unloading equipment).<\/span><\/p>\n<h3><b>\u200b\u200bEN 45544 &#8220;Control of Air Pollutants in the Workplace&#8221;\u200b\u200b<\/b><\/h3>\n<p><b>Core content:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bValve leakage rate limit\u200b\u200b(toxic gas scenario):<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Media Type<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Allowable leakage rate (ppm)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Detection Methods<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Hydrogen sulfide (H\u2082S)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22645<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Infrared spectroscopy (EN 45544-3)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Chlorine (Cl\u2082)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u22641<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Electrochemical Sensors<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bProtection design\u200b\u200b:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Double sealing structure (bellows + stuffing box).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Stem extension discharge port (directional collection of leaking gas).<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>\u200b\u200bIndustry Applications<\/b><span style=\"font-weight: 400;\">\u200b\u200b: Sulfur-containing natural gas valves in petrochemical plants, outlet valves for electrolyzers in the chlor-alkali industry.<\/span><\/p>\n<h3><b>\u200b\u200bEN 14015\u300aEnvironmental Design of Storage Tanks\u300b\u200b\u200b<\/b><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19601\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/821b4a7f8f6c4869bf63e22017cd5cb.png\" alt=\"Tank environmental protection\" width=\"2000\" height=\"800\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/821b4a7f8f6c4869bf63e22017cd5cb.png 2000w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/821b4a7f8f6c4869bf63e22017cd5cb-768x307.png 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/05\/821b4a7f8f6c4869bf63e22017cd5cb-1536x614.png 1536w\" sizes=\"auto, (max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p><b>\u200b\u200bKey Requirements\u200b\u200b:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u200b\u200bEnvironmental protection indicators of storage tank valves:<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Project<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\uc0c9\uc778<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\ud14c\uc2a4\ud2b8 \ubc29\ubc95<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Volatile Organic Compounds (VOCs)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Leakage rate \u2264500ppm (FID detection)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN 13598-1<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Stormwater pollution risk<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Valve outlet COD\u226450mg\/L<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ISO 6060<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Materials and Process:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">The tank breathing valve housing is made of stainless steel (1.4404) or lined with PTFE.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Zero leakage gaskets (EN 1514-1) are used at flange connections.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>\u200b\u200bApplication scenarios<\/b><span style=\"font-weight: 400;\">\u200b\u200b: Breathing valve of crude oil storage tanks, bottom valve of chemical storage tanks.<\/span><\/p>\n<h3><b>\u200b\u200bTechnical comparison: EN vs. ISO\/API standards\u200b\u200b<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Dimensions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN Standard System<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ISO\/API Standards<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bKey Differences and Impacts\u200b\u200b<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEnergy Efficiency Audit\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 16247\u200b\u200b\uff08Quantitative index of specific energy consumption\uff09<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bISO 50001\u200b\u200b(Energy Management System Framework)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN provides specific energy consumption limits and ISO provides management methods, and the two complement each other.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEmission Control\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN 14394 (NOx\u22643.5g\/kWh)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">API 536 (NOx\u22645.0g\/kWh)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN limits are stricter and require the installation of a post-processing system (cost +20%).<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bToxic gas leak\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 45544\u200b\u200b(H\u2082S\u22645ppm)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bOSHA 1910.119\u200b\u200b(H\u2082S\u226410ppm)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN limit is half of OSHA limit, requiring higher sealing level (double seal design).<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u200b\u200bStorage tank environmental protection\u200b\u200b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u200b\u200bEN 14015\u200b\u200b(VOC\u2264500ppm, COD\u226450mg\/L)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">API 650 (no VOC limit, COD\u2264100mg\/L)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EN environmental protection requirements are stricter, and tank valves need special designs (cost +15%).<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p class=\"entry-title\"><strong>More EN standard information, please visit us<a href=\"\/en-valve\/\">\u300aComprehensive Analysis of EN Valve Standards: A Core Guide to European Technical Regulations\u300b<\/a><\/strong><\/p>\n<p><span style=\"font-weight: 400;\">In an environment where global industrial standards are becoming increasingly stringent, JH Valve Manufacturing has always taken EN standards as its cornerstone, transforming rigorous compliance into core competitiveness &#8211; from EN 10204 certified materials to EN 14394 low-carbon emission designs, each valve carries the ultimate pursuit of safety and energy efficiency. We are well aware that standards are not only the bottom line, but also the starting point of innovation: by integrating the EN framework with the independently developed JH+ technology system, we have overcome the problem of ultra-low temperature sealing, achieved intelligent leakage warning, and redefined the industry&#8217;s sustainable benchmark with recycling and remanufacturing technology. In the future, JH will continue to use &#8220;standards as the boat and innovation as the paddle&#8221; to move forward in the global fluid control field and provide partners with better and more efficient solutions &#8211; because excellence never stops with standards.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19448\" src=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/04\/822f6f573772360da7c11a538201fb9-scaled.jpg\" alt=\"JH \ubc38\ube0c \uc81c\uc870\uc5c5\uccb4\" width=\"2560\" height=\"1920\" srcset=\"https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/04\/822f6f573772360da7c11a538201fb9-scaled.jpg 2560w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/04\/822f6f573772360da7c11a538201fb9-768x576.jpg 768w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/04\/822f6f573772360da7c11a538201fb9-1536x1152.jpg 1536w, https:\/\/janhenvalve.com\/wp-content\/uploads\/2025\/04\/822f6f573772360da7c11a538201fb9-2048x1536.jpg 2048w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>\u200b\u200bFoundation design and pressure boundary\u200b\u200b Ensure that the valve can withstand pressure, temperature and mechanical loads throughout its life cycle to avoid the risk of [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":19608,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[35],"tags":[],"class_list":["post-19418","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-valve-international-standards"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Panoramic Analysis of EN Valve Standards: Technical Systems You Must Know for EU Market Acces -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/janhenvalve.com\/ko_kr\/en-valve-standards\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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