CHINA J-VALVES Offers Various High-quality I ndustrial Ball Valves
J-VALVES, a distinguished professional ball valve manufacturer rooted in China, takes pride in its extensive product portfolio. Our offerings span a wide range, including trunnion-mounted ball valves, floating ball valves, high-temperature ball valves, high-pressure ball valves, metal-sealed ball valves, ultra-low temperature ball valves, DBB ball valves, Three-way And Four-way Ball Valve, and fully welded ball valves. Each product is a testament to our commitment to precision engineering and reliable performance. Meticulously crafted, they are designed to not only meet but exceed the most stringent industrial demands, ensuring stable operation even under extreme conditions. This enables us to provide our clients with high-value services and makes our valves widely sought-after in industries.
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Pressure Class: Class 150 ~ Class 2500 (PN20 ~ PN420)
Temperature Range: -46℃ ~ +200℃ (Standard Type); Optional low-temperature type -196℃ or high-temperature type +425℃
Materials:
Valve Body: ASTM A105 / A350 LF2 / A182 F304 / F316 / A694 F65
Ball: ASTM A105 + ENP (Electroless Nickel Plating, thickness ≥50μm) or stainless steel hardfacing STL / Tungsten Carbide
Valve Stem: ASTM A182 F6a / F316 / F51 (Duplex Steel) with surface hardening treatment
Valve Seat: RPTFE / Nylon / PEEK / Metal Hard Seal (STL Hardfacing)
Sealing Material: Flexible Graphite / Metal Ring Gasket / Lip Seal
Connection Type: Flange Connection (RF / RTJ), compliant with ASME B16.5
Operation Mode: Pneumatic drive (Double-Acting / Single-Acting Spring Return)
Air Supply Pressure: 0.4 MPa ~ 0.7 MPa (Standard); Optional 1.0 MPa high-pressure air source
Design Standards: API 6D, ASME B16.34, ISO 14313
Test Standards: API 6D, API 598, ISO 5208
Face-to-Face Dimension: Compliant with API 6D / ASME B16.10
Flow Resistance Coefficient: Kv value close to straight pipe of the same specification; Pressure drop loss ＜ 0.01 bar at full open condition
Actuator Standard: ISO 5211, API 6D actuator mounting specification
Operating Time: Double-acting: adjustable from 3s to 120s; Single-acting emergency shutoff ≤ 5s
Safety Integrity Level: Optional SIL 2 / SIL 3 certification (IEC 61508 / IEC 61511)
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J-VALVES
Full Bore Design: The bore diameter of the ball is identical to the pipeline inner diameter. Its flow resistance coefficient Kv is close to that of a straight pipe with extremely low pressure drop loss, maximizing flow capacity, significantly improving pipeline transportation efficiency and reducing energy consumption of pump stations.
Trunnion Mounted Structure: The ball is connected to the valve body via upper and lower trunnion shafts. Sliding bearings and thrust bearings withstand the huge thrust generated by medium pressure. The operating torque is not affected by pressure differential or nominal size, ensuring low-torque operation for large-bore full bore valves.
Pneumatic Actuator: Equipped with high-performance rack-and-pinion or Scotch Yoke pneumatic actuators, featuring high output torque and fast action speed. Available in double-acting and single-acting spring return types to realize remote automatic control and emergency shutoff of the valve.
Low Flow Resistance Seat Design: The valve seat adopts a streamlined transition structure with smooth flow passage without sudden changes, eliminating turbulence and vortex flow to further reduce flow resistance and noise.
Flange Connection: Adopts RF (Raised Face) or RTJ (Ring Type Joint) flange connection in compliance with ASME B16.5 standard, ensuring installation reliability and sealing performance under high-pressure working conditions.
Dual Piston Effect (DPE) Seat: The seat is designed with dual piston effect, achieving reliable bidirectional sealing regardless of medium flow direction and supporting DBB (Double Block and Bleed) function.
Anti-Static Device: Built-in anti-static springs and grounding device ensure the resistance between the ball, stem and valve body is less than 10Ω, eliminating static accumulation risks and suitable for flammable and explosive media.
Anti-Blowout Stem Design: The valve stem adopts an integrally forged anti-blowout structure with multiple seals, preventing stem ejection under abnormal pressure conditions and ensuring operational safety.
Fire Safe Design: Compliant with API 6FA / API 607 standards. The secondary metal sealing structure maintains sealing performance even in fire scenarios and prevents secondary disasters caused by medium leakage.
Emergency Sealant Injection System: API 6D standard grease injection valves are arranged at the seat and stem positions. Sealant can be injected in emergency situations to achieve temporary sealing and leakage repair.
Spring Return Safety Function: The actuator is optional with single-acting spring return type, which automatically fails open (FO) or fails closed (FC) when air supply fails to guarantee system safety.
Position Feedback & Monitoring: Standard mechanical valve position indicator; limit switches, valve position transmitters and solenoid valves are optional to realize remote status monitoring and interlock control.
2-3 piece body
Full andreduced bore trunnionmounted
Double block and bleed
Single or double piston effect design anti-blow out stem
Anti-static device
Firesafe to AP1-607/6FA/1S0 10497 springloaded seats
Sealant in jection on request NACE MR-01-75
API Licenses:
API6D
API6DSS
API6A-PSL4
Pressure Class:
ASME 150-2500
API 2000-15000
Service Type:
Standard Temperature:-29℃ to 220℃/-20°F to 428°F
Low Temperature:-46℃ to 150℃/-50°F to 302°F
Cryogenic Temperature: -47℃ to -196℃/-52°F to-320°F
Subsea(Shallow &Deep Water)
Underground
High Temperature:Above 220℃/428°F
J-VALVESSPE can supply a range ofseat types and configurationsto meet specific process needs:
J-VALVES trunnion mounted ball valves standard seat ringsare soft-seated by the use of athermoplastic or elastomeric or Meta
Seats-Tungsten /Chrome carbide /ENP
Single Piston (SPE) , Double Piston effect (DPE) and Combination (SPE x DPE) seats are available.
Valve seating variations
| Seat Design | Single piston effect (SPE) | Double piston effect(DPE)-DIB 1 | Combined DIB 2 |
| Bi-directional sealing | Yes | Yes | Yes |
| Body-Cavity Self relieving | Yes | No | Yes |
| Double Barrier | No | Yes | Yes (preferred direction only) |
Double Block and Bleed
Fire Safe
Types of Trunnion Ball Valves Available
2PC Flanged Trunnion Mounted Ball Valves, 3PC Side-Entry Flanged Trunnion Mounted Ball Valves, Metal-Seated Trunnion Mounted Ball Valves, Top-Entry Flanged Trunnion Mounted Ball Valves, High-Temperature Trunnion Mounted Ball Valves, High-Pressure Trunnion Mounted Ball Valves, Socket Weld (SW) Trunnion Mounted Ball Valves, Butt Weld (BW) Trunnion Mounted Ball Valves, Forged Trunnion Mounted Ball Valves, Cast Trunnion Mounted Ball Valves, Line Trunnion Mounted Ball Valves, Full Bore Trunnion Mounted Ball Valves, Reduced Bore Trunnion Mounted Ball Valves, Cryogenic Trunnion Mounted Ball Valves
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