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.
Product Category
Contact Us
Pressure Class: Class 150 ~ Class 2500 (PN20 ~ PN420)
Temperature Range: -46℃ ~ +200℃ (Standard Type); Optional low-temperature type down to -196℃ or high-temperature type up to +425℃
Materials:
Valve Body: ASTM A105 / A350 LF2 / A694 F65 / A182 F316 (optional according to working conditions)
Ball: ASTM A105 with 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 / tungsten carbide coating)
Sealing Material: Flexible graphite / Metal ring gasket / Lip seal / O-ring
Connection Type: Butt Weld (BW), compliant with ASME B16.25
Operation Mode: Manual (worm gear), Pneumatic, Electric, Hydraulic, Pneumatic-Hydraulic Linkage
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
Wall Thickness Standard: Meets minimum wall thickness requirements of ASME B16.34
Non-Destructive Testing: 100% Radiographic Testing (RT) + 100% Ultrasonic Testing (UT), compliant with ASME VIII Div.1 standard
-
J-VALVES
Butt Welded End Design: The valve body ends adopt standard wall thickness butt weld bevel complying with ASME B16.25. Full penetration welding connection with pipeline systems eliminates flange gasket leakage risks and improves overall system safety.
Trunnion Mounted Structure: The ball is connected to the valve body via upper and lower trunnion shafts. Sliding bearings and thrust bearings bear medium pressure; the operating torque is unaffected by pressure differential and bore size, ensuring low-torque operation for large-bore and high-pressure valves.
Optional Fully Welded Body: Optional fully welded body structure with no external leakage points and maintenance-free design. Its design service life exceeds 30 years, especially suitable for buried long-distance transmission pipelines.
Dual Piston Effect (DPE) Seat: The seat adopts a dual piston effect design to achieve reliable bidirectional sealing regardless of medium flow direction, and supports DBB (Double Block and Bleed) function.
Optional Self-Relieving Seat: Optional self-relieving seat or double isolation and bleed seat (DIB-1 / DIB-2) to meet safety pressure relief requirements of different working conditions.
Fire Safe Design: Compliant with API 6FA / API 607 standards. The secondary metal sealing structure maintains tightness even under fire conditions, preventing secondary disasters caused by medium leakage.
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 integrally forged anti-blowout stem is equipped with multiple seals, preventing stem ejection under abnormal pressure and ensuring operational safety.
Emergency Sealant Injection System: API 6D standard grease injection valves are arranged at the seat and stem areas. Sealant can be injected in emergency conditions to realize temporary sealing and leakage repair, extending the service life of the valve.
Low Operating Torque: The trunnion mounted structure bears medium thrust through bearings, reducing operating torque by more than 60% compared with floating ball valves. It allows the configuration of smaller-sized actuators and lowers system costs.
Actuator Interface: Equipped with ISO 5211 standard flange interface, compatible with manual worm gear, pneumatic, electric, hydraulic and pneumatic-hydraulic linkage actuators.
1 piece body
Full and reduced bore
Trunnion mounted
Double block and bleed
Single ordouble piston effect design anti-blow out stem
Anti-static device
Firesafe to API-607/6FA/ISO 10497
Springloaded seats
Sealantinjection 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-VALVES SPE 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) |
Hot Products
News
CE Certification Vs API Certification for 3PC Trunnion Ball Valves Which Performs More Stable in High-Temperature Service
What is the difference between CE-certified and API-certified 3PC trunnion ball valves in high-temperature service? This article compares certification logic, materials, sealing design, manufacturing standards, and real-world application to help you choose a more stable solution.
Read More
API 6D Vs API 600 Certification for Offshore Engineering: Why More Projects Specify API 6D for Forged Trunnion Ball Valves?
Why do more offshore engineering projects specify API 6D certification for forged trunnion ball valves? This easy-to-read guide compares API 6D and API 600 and explains which standard better fits offshore platform service.
Read More
Material Selection Guide for DBB Flanged Trunnion Mounted Ball Valves
Double Block and Bleed (DBB) flanged trunnion mounted ball valves are widely used in industrial fluid systems, including oil and gas, chemical processing, and power generation. These valves provide superior safety, isolation, and maintenance flexibility, allowing both upstream and downstream shutoff with a bleed function in between. A critical factor in their performance, reliability, and longevity is the selection of materials for valve body, ball, seat, and sealing components.
Read More
Oil Pipeline Project API6D Certified Vs ISO Certified 1500LB A105N Large Diameter Trunnion Ball Valve Which Should You Choose for Frequent High Pressure Leakage Problems
In oil pipeline engineering, frequent high-pressure leakage means the system needs serious optimization.
For a 1500LB A105N large diameter trunnion ball valve, API6D certification is usually more suitable than a general ISO certification when the application is pipeline-critical, especially in crude oil, natural gas, and high-pressure transmission systems.
