DN4000 | صب متكامل | API CE ABS
القطر الاسمي：160’’(DN4000）
الضغط الاسمي：Class2500(250MPa）
أقصى درجة حرارة تشغيل425 درجة مئوية
مادة الغلافمجلس تعويضات العمال，مجلس مدينة واشنطن，A105，F304，F316，F316L，N06625，CF8، CF3، CF3M، CW6MC، CY40، M35-1،إنكونيل 718，N10276，CF8M，مونيل K500
معايير التصميم: API 609، AWWA V504، GB/T 12238، EN 593، DIN 3354، JIS B2034
اتصال:شفة
وضع القيادةيدوي، كهربائي، هوائي، هيدروليكي
Product Definition & Mission
The JH DN4000 Class150 ultra-large one-piece cast butterfly valve is the world’s first DN4000 diameter one-piece cast butterfly valve. Designed as a core component for nuclear power, offshore platforms, and large-scale water conservancy systems, it resolves three major industry pain points: structural deformation, sealing failure, ، و opening/closing flutter in ultra-large diameter butterfly valves under high-pressure conditions.
The “JH Ultra-Large Butterfly Valve Technology” list includes the world’s first one-piece integral casting technology (valve body material: ASTM A351 Gr.CF8M, hardness ≥150HB), a triple-offset metal sealing system (leakage rate ≤100ppm), and a heavy-duty bearing structure (torque ≤35,000 N·m), eradicating structural defects and dynamic stability challenges in DN4000 valves under Class150 pressure.
التصميم الأساسي والمزايا
One-Piece Cast Body
Utilizes the world’s first DN4000 diameter integral precision casting technology → Material: ASTM A351 Gr.CF8M (ISO 4991 certified) | Eradicates valve body weld defects, tensile strength ≥485MPa.
Triple-Offset Seal
Sealing ring features multi-layer STL alloy overlay (thickness ≥2.5mm) → Leakage Class ≤100ppm (ISO 5208 Class A certified) | Resolves leakage of high-pressure gas and liquid media.
Low Flow Resistance Passage
Streamlined disc optimized via CFD fluid simulation → Flow Coefficient Kv≥280,000 | Solves energy loss pain points in large-diameter pipelines, reducing pressure drop by ≥35%.
Heavy-Duty Bearing Structure
Dual bearing support system (radial bearing + thrust bearing) → Operating Torque ≤35,000 N·m (API 609 standard) | Eliminates valve stem sticking and opening/closing flutter.
تصميم مقاوم للحريق
Metal seal + graphite fire-safe structure → API 607 fire safety certified | Eradicates seal failure risks under extreme high-temperature conditions.
Intelligent Actuation Compatibility
Valve shaft end designed to ISO 5211 F60 standard → Compatible with electric/hydraulic actuators | Resolves precise flow control challenges in ultra-large diameter valves.
منتجات أخرى
FAQ-DN4000 Butterfly Valve
DN4000 butterfly valves are designed for large-scale flow control applications, primarily used in water treatment plants, power station cooling systems, large-scale irrigation projects, and industrial water circulation systems where high flow capacity and reliable performance are critical requirements.
The key advantages include:
هيكل مضغوط: Requires significantly less installation space compared to gate valves of similar size
خفيف الوزن: Approximately 60-70% lighter than equivalent gate valves, reducing structural support requirements
عملية سريعة: 90° rotary operation enables fast opening and closing
فعال من حيث التكلفة: Lower initial cost and reduced maintenance requirements
Excellent Flow Capacity: Minimal flow resistance with low pressure drop
تشمل المعايير الأساسية للاختيار ما يلي:
معدل الضغط: نطاق ضغط التصميم وضغط التشغيل
خصائص الوسط: Water quality, temperature, and potential solid content
طريقة التشغيل: Manual gear operation, electric actuator, or hydraulic drive
متطلبات الإغلاق: Zero leakage or allowable leakage rate
Material Specifications: Body, disc, and seat materials based on corrosion requirements
Critical installation considerations:
الدعم المؤسسي: Requires reinforced concrete foundation design
دقة المحاذاة: Laser alignment recommended for flange connections
Installation Sequence: Proper sequencing with adjacent piping components
Temporary Support: Adequate temporary support during installation phase
حجز المساحة: Sufficient maintenance space around the valve
We guarantee structural integrity through:
Finite Element Analysis: Advanced computer modeling for stress distribution
Reinforced Design: Multiple rib reinforcement on body and disc
اختيار المواد: High-strength carbon steel or ductile iron materials
ضبط الجودة: 100% non-destructive testing on all welds
Prototype Testing: Full-scale performance testing before production
Our products comply with international standards including:
CE Certification: Meeting European safety requirements
ISO 9001: Quality management system certification
API 609: Butterfly valve design standard
AWWA C504: Water works standard compliance
ABS/BV/CCS: Major classification society approvals available
We recommend comprehensive maintenance including:
الفحص الدوري: Quarterly visual inspections and annual detailed checks
Seal Monitoring: Regular seat and seal condition assessment
Operational Testing: Full stroke operation testing every six months
الحماية من التآكل: Periodic coating inspection and maintenance
Data Recording: Maintenance history documentation for predictive analysis
We offer extensive customization capabilities:
مواد خاصة: Various material combinations for different media
Drive Options: Multiple actuator configurations and control systems
Connection Types: Custom flange standards and facing requirements
Accessory Packages: Complete sets including limit switches, positioners
الدعم الفني: On-site installation guidance and commissioning assistance