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J-VALVES
8 1500LB API Standard High Pressure Trunnion Ball Valve
Specification Item | Parameter |
Nominal Diameter | 1/2"~56" (DN15~DN1400) |
Pressure Class | 150LB~2500LB (PN20~PN420) |
Design Standard | API 6D, ASME B16.34 |
Face-to-Face Dimension | ASME B16.10 |
End Connection | RF / RTJ Flange (ASME B16.5) or BW Butt Weld (ASME B16.25) |
Body Material | ASTM A105 (Forged Carbon Steel), ASTM A182 F316/F51 (Stainless Steel / Duplex Steel), etc. |
Ball / Seat | 13%Cr Stainless Steel; Optional SS304/316/316L or Duplex Steel |
Sealing Level | Soft Seal: Zero Leakage (Bubble Tight); Metal Seal: ANSI/FCI 70-2 Class V/VI |
Temperature Range | -46°C ~ +120°C (Standard); Up to +540°C for Metal Seal |
Operation Mode | Manual (Gear Box), Electric, Pneumatic, Hydraulic |
Test Standard | API 598 / API 6D (Shell Strength, Sealing, Low-pressure Air Seal) |
Trunnion Mounted Double Bearing Design: The ball is fixed by upper and lower stems and supported by bearings. Medium pressure is borne by the seat spring loading system instead of pushing the ball against the seat. This design greatly reduces operating torque, enabling easy opening and closing under 1500LB high-pressure conditions and avoiding operation jamming of conventional floating ball valves caused by excessive differential pressure.
Double Block & Bleed (DBB) Function: A bleed/drain port is arranged in the valve body cavity. When the valve is closed, independent double-side sealing of upstream and downstream can be realized, and sealing integrity can be verified through cavity bleeding. It meets the requirements of pipeline isolation, safety maintenance and pressure relief, complying with API 6D DBB specifications.
Fire Safe Design: Adopts API 607 / API 6FA certified fire safe structure: after the soft seal seat is burned out in a fire, the metal seat and ball still maintain metal-to-metal sealing; graphite packing and body gaskets ensure no external leakage during fire, safeguarding the safety of critical pipelines.
Anti-Static & Blowout-Proof Stem: Standard equipped with anti-static device to ensure electrical continuity among ball, stem and valve body, eliminating static accumulation risks. The stem adopts blowout-proof shoulder design to prevent stem ejection when internal pressure rises abnormally, protecting personnel and equipment safety.
Emergency Sealant Injection System: Grease injection ports are provided at seats and packing. Under extreme working conditions or seal damage, special sealant can be injected for emergency sealing, extending valve service life and reserving maintenance window period.
Cavity Pressure Relief: When the cavity pressure exceeds 1.33 times of pipeline pressure, the seat spring automatically relieves pressure to the pipeline side, preventing overpressure risk of the valve cavity caused by medium thermal expansion.
Working Condition Type | Recommended Body Material | Seat Material |
Conventional Oil & Gas / Water | ASTM A105 / A350 LF2 | RPTFE / DEVLON / PEEK |
Corrosive Medium | ASTM A182 F316 / F316L | SS316 + Nylon / PEEK |
Sulfur-Containing / Acidic Natural Gas | ASTM A182 F51 (Duplex Steel) | PEEK / Metal Seal + Tungsten Carbide Coating |
High Temperature & High Pressure | ASTM A217 WC6/WC9 (Chrome Moly Steel) | Metal Seal (Stellite / Tungsten Carbide Hard Facing) |
The metal seal solution adopts HVOF supersonic sprayed tungsten carbide or Stellite alloy, paired via precision grinding to achieve Class V/VI sealing performance, applicable to extreme working conditions with solid particles, high temperature or strong corrosion.
Long-distance Pipeline: Isolation and cut-off of crude oil, refined oil and natural gas trunk lines
Oil & Gas Field Surface Engineering: High-pressure manifold of wellheads, gathering stations and processing plants
Petrochemical Plant: High temperature and high pressure working positions for hydrocracking and catalytic cracking units
LNG Terminal: Low-temperature and high-pressure natural gas transmission system
Power Industry: High-pressure isolation for steam, feed water and fuel systems
Design & Manufacture: API 6D, ASME B16.34, BS 5351, ISO 14313
Flange Standard: ASME B16.5 / B16.47 (Series A/B)
Inspection & Test: API 598, API 6D (Including Low-pressure Air Seal Test)
Fire Safety Certification: API 607, API 6FA
Functional Safety: Optional SIL Certification (Electric/Pneumatic Actuator)
NACE Compliance: NACE MR0175/ISO 15156 (Optional for Acid Service)
End Connection | Face-to-Face A | Height H | Approx. Weight |
RF Flange | 832 mm | 376 mm | 880 kg |
RTJ Flange | 841 mm | 376 mm | 880 kg |
BW Butt Weld | 832 mm | 376 mm | 616 kg |
Note: Specific dimensions may vary slightly due to manufacturer design differences, subject to final technical drawings.
