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: 900LB (PN150)
Temperature Range: -29℃ to +425℃
Body/Bonnet: ASTM A352 LCB/LCC (low-temperature cast carbon steel), or A350 LF2 / A182 F304/F316 (low-temperature forged stainless steel, cryogenically treated)
Ball: Material matching the body + hard chrome plating or nitriding treatment
Stem: F304/F316 or 17-4PH (cryogenically treated)
Seat: PCTFE (Polychlorotrifluoroethylene), PTFE, RPTFE; PEEK available for cryogenic high-pressure service
Sealing Materials: PCTFE/PTFE/RPTFE (seats); low-temperature special graphite or PTFE/V-type combination (stem packing)
Extended Stem/Bonnet: Material matching the body, length customized to insulation thickness
Bearing/Support Shaft: F304/F316 or Inconel alloy + low-temperature self-lubricating bearings
Gasket: Metal ring gasket (octagonal/oval type, conforming to ASME B16.20) or low-temperature special gasket
End Connection: Flanged (RTJ ring-type joint face, conforming to ASME B16.5)
Operation: Manual (low-temperature worm gear/bevel gear, bearing-assisted torque reduction), pneumatic (low-temperature type), electric (low-temperature type), hydraulic (high-torque actuator mandatory with low-temperature accessories)
Design Standards: ASME B16.34, API 6D, API 608
Inspection & Test Standard: API 598, API 6D
Face-to-Face Dimension: Conforms to ASME B16.10
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J-VALVES
Low Temperature Toughness Material:The valve body adopts cryogenically treated materials such as ASTM A352 LCB/LCC (low-temperature cast carbon steel) or A350 LF2/A182 F304/F316 (low-temperature forged stainless steel). Through liquid nitrogen immersion at -196℃, residual stress is relieved and austenitic structure is stabilized, preventing low-temperature embrittlement and dimensional variation, ensuring toughness and reliability under extreme low-temperature conditions.
Trunnion Mounted Design:The ball is fixed to the valve body via upper and lower support shafts. The substantial thrust generated by medium pressure is borne by the bearing system, delivering stable and extremely low operating torque. This eliminates operating difficulties or seizure issues of floating ball valves under large-bore and high-pressure conditions, making it particularly suitable for 20-inch 900LB cryogenic high-pressure services.
Reduced Bore (20x16"):The valve body end is 20 inches (DN500) with an internal flow passage of 16 inches (DN400). Under ultra-high pressure, it significantly reduces wall thickness requirements and material consumption as well as weight, while satisfying the control demand for large-flow cryogenic media. Its economic efficiency is superior to that of full-bore design.
Extended Low-Temperature Stem:Stem length is customized according to the thickness of the cold insulation layer (typically 500mm–2000mm), positioning the stuffing box and operating mechanism away from the cryogenic zone of the valve body. This prevents cold injury to operators, avoids interference between the cold insulation layer and operation, and reduces freezing failure of the packing area caused by cold conduction.
Flanged Connection:RTJ (Ring-Type Joint) flanged connection is adopted in compliance with ASME B16.5, at 900LB (PN150) pressure class. Sealing with octagonal or oval metal ring gaskets ensures absolute sealing reliability under cryogenic high-pressure conditions.
Extended Bonnet and Packing System:Designed with an extended bonnet, the stuffing box is located outside the cold insulation layer. Multi-layer PTFE/V-type graphite or special low-temperature packing is applied. Combined with the cold isolation effect of the extended stem, the temperature of the packing area is maintained within an operable range, preventing leakage or seizure caused by freezing.
20x16 900LB Cryogenic Trunnion Mounted Ball Valve 3D Diagram
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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