API 6A High Pressure Plug Valve
Nominal Sizes: 1″, 2″, 3″, 4″ (DN25 to DN100)
Working Pressure Ratings: 2,000 PSI to 20,000 PSI (13.8 MPa to 138.0 MPa)
Product Specification Levels (PSL): PSL 1, PSL 2, PSL 3, PSL 3G
Performance Requirement Levels (PR): PR 1, PR 2
Material Classes: AA, BB, CC, DD, EE, FF, HH (Fully compliant with NACE MR0175 / ISO 15156)
Temperature Ratings: K, L, P, R, S, T, U, V (-46°C to +121°C)
接続の終了: Hammer Union (Fig 1502 / Fig 2202 / Fig 602), API 6A Flanged, LP Threaded
API 6A High Pressure Plug Valve
製品定義と安全ミッション：
Serving as the primary high-pressure isolation barrier across fracturing, cementing, and acidizing manifolds, the JH Plug Valve provides absolute fluid containment up to 20,000 PSI. Featuring a precision cylindrical plug and dual arcuate seal segments with specialized grease lubrication, it delivers effortless 90-degree quarter-turn operation and reliable bidirectional zero-leakage shutoff.
JH-Valve Plug Valve Technology Core:
- Low-Torque Quarter-Turn Actuation: Dual side seal segments and grease channels drastically reduce operating friction under 20,000 PSI differential pressure.
- Tungsten Carbide Coated Plug: Precision-ground alloy plug with HVOF Tungsten Carbide coating resists severe proppant erosion and particle scratching.
- Top-Entry Rapid Maintenance: Top-entry bonnet architecture enables fast replacement of internal plugs and seal segments without inline disconnection.
- 100% NACE MR0175 Compliant: Forged low-alloy steel architecture ensures complete resistance to Sulfide Stress Cracking (SSC) in sour fracturing environments.
- Low Torque Sealing
- Fast Field Maintenance
- API 6A & NACE Standards
Engineered for pressures up to 20,000 PSI and heavy proppant slurries, delivering effortless quarter-turn operation and bubble-tight bidirectional shutoff.
主な機能：
▌ Arcuate Segment Seal Assemblies → Precision-machined dual side seal segments backed by resilient cushion seals | Maintains constant sealing surface contact under full differential pressure to ensure zero-leakage bidirectional integrity
▌ Low Torque Quarter-Turn Actuation → Optimized contact geometry paired with integrated lubricant distribution grooves | Drastically reduces operating torque under full working pressure for smooth manual or automated actuation
▌ HVOF Tungsten Carbide Coated Plug → High-strength alloy plug coated with Heavy HVOF Tungsten Carbide or hard chrome | Superior resistance against severe erosion from fracturing proppants, sand slurries, and high-velocity fluids
Provides a top-entry modular architecture and fast field replacement solutions to minimize costly non-productive time (NPT).
主な機能：
▌ Top-Entry Rapid Inline Maintenance → Engineered with a top-entry bonnet architecture | Permits field personnel to replace the plug and side seal segments within minutes without disconnecting the valve body from the manifold
▌ Integrated Grease Injection System → Equipped with a high-pressure check valve grease fitting and circumferential distribution channels | Enables online grease replenishment under pressure to lubricate sealing surfaces and restore low-torque operation
▌ High-Pressure End Connections → Precision-machined Fig 1502 / 2202 / 602 Hammer Unions, API Flanges, and LP Threads | Fully interchangeable with SPM, FMC, and other global standard high-pressure fracturing and cementing manifolds
Complies with strict manufacturing quality, high-pressure dynamic verification, and severe sour environment requirements.
主な機能：
▌ Integral Forged Valve Body → Forged from premium low-alloy steel with 100% volumetric non-destructive examination (NDE) | PSL 3G pressure and gas test compliance ensures zero internal flaws under severe pulsation
▌ PR2 Dynamic Thermal Validation → Validated under API 6A PR2 dynamic pressure cycling and thermal endurance tests | Maintains smooth torque and seal integrity across -46°C to +121°C up to 20,000 PSI working pressure
▌ 100% NACE MR0175 Sour Service Readiness → Fully compliant with API Material Classes AA–HH and NACE MR0175 / ISO 15156 | Provides complete immunity to Sulfide Stress Cracking (SSC) in aggressive H2S/CO2 sour flowback environments
コアデザインと利点
- Arcuate Segment Seals & Low Operating Torque → Dual precision side seal segments combined with optimized contact geometry | Significantly lowers rotational friction under full 20,000 PSI differential pressure, enabling swift quarter-turn actuation and bidirectional bubble-tight sealing
- HVOF Tungsten Carbide Hardened Plug → Precision-ground alloy plug coated with heavy HVOF Tungsten Carbide or hard chrome | Delivers exceptional erosion resistance against aggressive fracturing proppants and high-velocity sand slurries
- Top-Entry Rapid Inline Maintenance → Engineered with an accessible top-entry bonnet architecture | Permits field technicians to perform full internal replacement of plugs and side seal segments within minutes without disconnecting the valve body from the manifold
- In-Line Pressure Grease Lubrication → Features a high-pressure check valve grease fitting with circumferential channels | Allows online lubricant replenishment under working pressure to restore smooth low-torque operation and seal minor surface scratches
- Strict PSL 3G & PR2 Level Integrity → Integrally forged from high-strength low-alloy steel to API 6A PSL 1–3G standards and validated by PR2 dynamic performance cycling | Ensures zero-leakage sealing up to 20,000 PSI across -46°C to +121°C
- 100% Severe Sour Service Readiness → Fully compliant with API Material Classes AA–HH and NACE MR0175 / ISO 15156 standards | Provides total immunity to Sulfide Stress Cracking (SSC) in aggressive H2S/CO2 sour fracturing and flowback environments
FAQ-API 6A High Pressure Plug Valve
The JH High Pressure Plug Valve features a precision-machined, cylindrical/tapered plug integrated with high-integrity metal side-segments (seat slips). When operated, fluid pressure forces the plug down into the tapered body cavity, creating a robust seal between the plug face and side segments. Grease injection ports allow emergency sealant delivery to lubricate dynamic contact surfaces, drastically lowering operating torque and ensuring quick quarter-turn shut-off under working pressures up to 15,000 PSI.
Designed for extreme field mobility and harsh high-flow erosion, JH plug valves feature heavy-duty forged alloy steel construction and top-entry design. Equipped with standardized high-pressure hammer union ends (e.g., Fig 1502/2202), operators can rapidly rig up or disconnect lines. In-line repairability allows quick replacement of worn side segments and internal plugs directly on site without discarding the valve body.
PSL 3G represents the highest quality control tier under API 6A for gas-tight wellhead equipment, mandating rigorous high-pressure gas (Nitrogen) shell and seat testing beyond standard hydrostatic tests. JH-Valve holds official API 6A authorization with PSL 3G capability explicitly scope-covered on our official API certificate. Every PSL 3G valve undergoes in-house gas testing to guarantee zero-leakage gas containment in severe high-pressure gas wells.
PR2 (Performance Requirement Level 2) validates that a valve maintains bubble-tight sealing and smooth operation through dynamic temperature cycles (-46°C to +121°C) under full working pressure (up to 20,000 PSI). JH-Valve’s API 6A qualification scope officially includes PR2 performance validation, backed by certified third-party dynamic cycling test reports to ensure uncompromising reliability under extreme field fluctuations.
Every JH-Valve specified for sour service uses forged body materials and internal trims compliant with NACE MR0175 material limits. We strictly control heat treatment processes (such as double tempering) to maintain material hardness below HRC 22, eliminating the risk of Sulfide Stress Cracking (SSC) and Hydrogen-Induced Cracking (HIC) in high H₂S/CO₂ sour oil and gas environments.
JH-Valve offers full pressure ratings ranging from 2,000 PSI to 20,000 PSI (13.8 MPa to 138.0 MPa) and sizes from 2-1/16″ to 7-1/16″. End connections can be customized to API 6A 6B/6BX flanged ends, API 6A studded connections, or high-pressure hammer union ends (e.g., Fig 1502/2202) according to project specifications.
Yes. JH-Valve wellhead valves, including our high pressure plug valves and choke valves, feature a top-entry architecture. Field technicians can unbolt the top bonnet assembly and extract internal plugs, sealing side segments, or stem packing for fast inspection and replacement without disconnecting the valve body from the manifold line, minimizing field downtime.