Large Bore Offshore Pipeline Ball Valve
Specifications
- Product series: Shoritsu OPV-T
- Size range: 50mm and larger (2″ and above)
- End connection: Flanged (ANSI RF / RTJ) / Buttweld
- Pressure rating: ANSI CL150 to CL2500 / API 6A working pressure classes
- Body material: Carbon steel / Duplex (UNS S31803) / Super duplex (UNS S32750)
- Ball & stem: Stainless steel (SS316) / Duplex / Super duplex
- Seat type: Dual piston effect (DPE) / spring-loaded
- Secondary seat: Metal-to-metal (fire-safe)
- Packing: Graphite fire-safe
- Bore: Full bore
- Body design: Trunnion-mounted, side entry
- Cavity relief: Self-relieving / non-relieving as specified
- Operation: Gear operated / hydraulic actuator / pneumatic actuator
- Fire test standard: API 607 / ISO 10497
- Design standard: API 6D / API 6A / ASME B16.34
- Material standard: NACE MR0175 / ISO 15156 (sour service)
- Finish: Epoxy painted / thermal spray aluminium (offshore)
The Shoritsu OPV-T Series is a trunnion-mounted, full bore ball valve designed for critical isolation service in offshore pipeline, subsea, and high-pressure onshore pipeline applications. The trunnion-mounted design reduces operating torque for large bore and high-pressure service, while dual piston effect (DPE) seats provide reliable sealing in both flow directions under the most demanding pressure and temperature conditions.
Features
- Trunnion-mounted design reduces operating torque significantly compared to floating ball designs in large bore and high-pressure service, allowing smaller actuators and reducing mechanical stress on pipeline connections
- Dual piston effect (DPE) seats provide reliable bidirectional sealing under high differential pressure, ensuring positive isolation in both flow directions throughout the valve’s service life
- Sour service compliance to NACE MR0175 / ISO 15156 with material selection and hardness controls specified from the outset for H2S-containing pipeline service
- Certified firesafe construction to API 607 and ISO 10497, with graphite fire-safe stem packing and metal-to-metal secondary seats maintaining pipeline integrity under fire exposure
- Full offshore documentation package including material mill certificates, hydrostatic and pneumatic pressure test records, fire test certification, and third-party inspection reports supplied with every unit