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 to Class 2500 (PN20 to PN420)
Temperature Range: -29℃ to +425℃
Extended Stem Length: Customizable according to customer requirements, typically extended by 100mm to 1000mm to meet insulation thickness or burial depth requirements.
Body: WCB, LCB, LCC, CF8, CF8M, CF3, CF3M
Ball: CF8, CF8M, F304, F316, with surface hardening treatment (ENP, tungsten carbide coating)
Stem: F304, F316, 17-4PH, XM-19 (stainless steel protective sleeve available for extended section)
Seat: PTFE, RPTFE, PCTFE (for low temperature), metal seat (Stellite / nickel-based alloy)
Packing: Flexible graphite, special low-temperature packing, graphite braided with nickel wire
Gasket: Flexible graphite composite gasket, spiral wound gasket, metal ring gasket
End Connection: Flanged (RF, RTJ), Butt Welded (BW)
Operation: Lever (small size), worm gear, pneumatic, electric, pneumatic-hydraulic actuator
Design Standard: API 6D
Test Standard: API 598
Face-to-Face Dimension: In accordance with ASME B16.10
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J-VALVES
Premium Casting Material: The valve body is made of cast steel or stainless steel such as WCB, LCB, LCC, CF8, CF8M, etc., featuring excellent strength, toughness and low-temperature resistance, suitable for various operating conditions from normal temperature to cryogenic service.
hree-Piece Cast Structure: The valve body consists of three sections. The middle body retains the ball and seats, while the side bodies connect to the pipeline. The cast structure is ideal for large-bore valves, offering economical cost and easy manufacturing of complex flow passages.
Trunnion Mounted Ball Design: The ball is supported and fixed in the valve body by upper and lower stems, without floating under medium pressure. Seating is achieved via spring-loaded seats, ensuring stable sealing performance under high differential pressure and large-size applications.
Extended Stem Design: The extended stem places the packing gland and operating device away from low-temperature zones or insulation layers, preventing freezing, heat loss or operational inconvenience, and enabling ground operation for buried valves.
Fire-Safe Design: Complies with API 607 standard. The metal-sealed structure maintains sealing integrity in case of fire to prevent medium leakage.
Anti-Static Device: Equipped with built-in anti-static spring and steel ball, ensuring electrical continuity between the ball, stem and valve body, preventing static accumulation and reducing fire and explosion risks.
Optional DBB/DIB Function: Double Block & Bleed (DBB) or Double Isolation & Bleed (DIB-1/DIB-2) functions are available, providing reliable isolation and safe relief of cavity pressure.
- Multiple Operation Modes: Can be equipped with lever, worm gear, pneumatic, electric and pneumatic-hydraulic actuators to meet automatic control requirements.
2-3 piece body
Full andreduced bore trunnion mounted
Double block and bleed
Single or double piston effect design anti-blow out stem
Anti-static device
Firesafe to AP1-607/6FA/IS0 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.
| 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) |
Emergency Seat Injection
Emergency grease in jection fitting forseat rings are standard for6" and larger valves and as option on sizes 2"-4".
An eedle valve, complete with non return check valve is screwed in the bodyand connected to theseatrings.
The emergency sealantinjection can temporarily solve leakage problems, seatsshall be re paired at the first opportunity.
For valves smaller than 6" seat sealant in jection fitting can beprovided in the body cavity
Body Vent & Drain
All J-VALVES SPE TMBV are complete with ascrewed NPT Plug, located in thelower side of the body completedraining of the body cavity.
For valves up to size 4"the drain and vent are combined in oneport.
Extended Stem
Extended stem is supplied for Underground in stalla tion.
The stem seals arelocated inthe body Gland Plate.
The stem extension isnot affected by eventual stem seal failure.
Double Piston Effect
Extended bonnets are available for Cryogenic or high temperature service or special applications requiring this facility features.
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