 |
| Quantity: | |
|---|---|
J-VALVES
ASME B16.34 WCB Carbon Steel 2PC Flanged Trunnion Mounted Ball Valve with Double Vent Needle Valves
Structural Features
WCB Carbon Steel Construction: The valve body is made of ASTM A216 WCB cast carbon steel, offering high strength, excellent toughness, and superior pressure-bearing performance for high-pressure applications.
Two-Piece Design: The split body design facilitates on-site maintenance, inspection, and replacement of internal components, effectively reducing downtime.
Trunnion Mounted Ball Design: The ball is securely supported by upper and lower trunnions, maintaining stability under high medium pressure and preventing ball displacement to ensure reliable sealing performance.
Spring-Loaded Floating Seats: The seats automatically conform to the ball surface under medium pressure, combined with spring preload force, achieving bi-directional sealing with zero leakage.
Double Vent Needle Valves: Two vent needle valves are installed on both sides of the valve body cavity, enabling rapid and precise venting of cavity medium to meet DBB requirements, facilitating online testing and maintenance.
Flanged End Connections: RF (Raised Face) flanged connections in accordance with ASME B16.5 standards ensure installation reliability and sealing integrity.
Fire-Safe Design: Compliant with API 607/API 6FA standards, the valve maintains sealing performance even under fire conditions, preventing medium leakage.
Anti-Static Device: Built-in anti-static springs connect the body, ball, and stem to effectively prevent static electricity buildup, reducing fire and explosion risks.
Blow-Out Proof Stem: The stem features a blow-out proof design to ensure it will not eject under abnormal pressure, safeguarding operational safety.
Emergency Sealant Injection System: Sealant injection ports are provided at the seat and stem areas for emergency sealant injection to restore sealing performance.
Compact Design: Compact structure and light weight facilitate easy installation and integration into existing pipeline systems.
Technical Specifications
Parameter Item | Specification |
Size Range | 1/2″ ~ 48″ (DN15 ~ DN1200) |
Pressure Class | Class 150 to Class 2500 (PN20 to PN420) |
Temperature Range | -46℃ ~ +120℃ (Standard); High-temperature version optional |
Body Material | ASTM A216 WCB (Carbon Steel) |
Ball Material | A105 / A105N, A182 F304 / F316 |
Stem Material | A182 F304 / F316 Stainless Steel |
Seat Material | RPTFE, DEVLON, PEEK, Metal Seal |
Sealing Materials | PTFE, RPTFE, Graphite |
End Connection | Flanged (RF / RTJ) |
Vent Needle Valve Layout | 1 piece on each side of body cavity, 2 pieces total |
Vent Needle Valve Material | A105 / SS316 |
Operation Mode | Manual (Lever / Gearbox), Pneumatic, Electric, Hydraulic |
Design Standards | API 6D, ASME B16.34, BS 5351 |
Test Standards | API 598, API 6D, ISO 5208 |
Fire-Safe Standards | API 607, API 6FA |
Face-to-Face Dimension | Complies with ASME B16.10 |
Flange Standard | Complies with ASME B16.5 / ASME B16.47 |
Weld End Standard | Complies with ASME B16.25 |
NACE Compliance | NACE MR0175 acid-resistant service optional |
Applications
Oil & Gas Industry: Used in oil & gas field production, gathering, processing, and long-distance pipeline systems for reliable medium isolation and safe venting.
Petrochemical Industry: Suitable for various chemical medium transportation, reaction, and storage systems to prevent medium leakage and ensure production safety.
Power Generation: Used in steam, cooling water, and fuel pipeline systems for thermal power plants and nuclear power stations.
Refining Industry: Used for medium isolation and venting in crude oil processing, refined product transportation, and storage systems.
General Industrial Use: Suitable for control and isolation of water, oil, gas, and other media to meet various industrial pipeline requirements.
Advantages & Value
High Reliability: The trunnion mounted ball design and spring-loaded seats ensure stable valve operation under high-pressure conditions, reducing maintenance frequency and downtime.
Enhanced Safety: The double vent needle valve configuration achieves DBB functionality, combined with fire-safe, anti-static design and reliable sealing performance, effectively minimizing leakage risks and ensuring personnel and equipment safety.
Easy Installation & Maintenance: The two-piece flanged structure simplifies installation, while the vent needle valves facilitate online testing and maintenance without disassembling the main valve.
Wide Applicability: Multiple material options and broad pressure/temperature ranges enable adaptation to various complex operating conditions and medium characteristics.
Cost-Effective: By integrating DBB functionality, the need for additional isolation and vent valves is eliminated, reducing pipeline system complexity and installation costs.
