• Full Bore Design: The bore diameter of the ball is identical to the pipeline inner diameter. Its flow resistance coefficient Kv is close to that of a straight pipe with extremely low pressure drop loss, maximizing flow capacity, significantly improving pipeline transportation efficiency and reducing energy consumption of pump stations.

• Trunnion Mounted Structure: The ball is connected to the valve body via upper and lower trunnion shafts. Sliding bearings and thrust bearings withstand the huge thrust generated by medium pressure. The operating torque is not affected by pressure differential or nominal size, ensuring low-torque operation for large-bore full bore valves.

• Pneumatic Actuator: Equipped with high-performance rack-and-pinion or Scotch Yoke pneumatic actuators, featuring high output torque and fast action speed. Available in double-acting and single-acting spring return types to realize remote automatic control and emergency shutoff of the valve.

• Low Flow Resistance Seat Design: The valve seat adopts a streamlined transition structure with smooth flow passage without sudden changes, eliminating turbulence and vortex flow to further reduce flow resistance and noise.

• Flange Connection: Adopts RF (Raised Face) or RTJ (Ring Type Joint) flange connection in compliance with ASME B16.5 standard, ensuring installation reliability and sealing performance under high-pressure working conditions.

• Dual Piston Effect (DPE) Seat: The seat is designed with dual piston effect, achieving reliable bidirectional sealing regardless of medium flow direction and supporting DBB (Double Block and Bleed) function.

• 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 valve stem adopts an integrally forged anti-blowout structure with multiple seals, preventing stem ejection under abnormal pressure conditions and ensuring operational safety.

• Fire Safe Design: Compliant with API 6FA / API 607 standards. The secondary metal sealing structure maintains sealing performance even in fire scenarios and prevents secondary disasters caused by medium leakage.

• Emergency Sealant Injection System: API 6D standard grease injection valves are arranged at the seat and stem positions. Sealant can be injected in emergency situations to achieve temporary sealing and leakage repair.

• Spring Return Safety Function: The actuator is optional with single-acting spring return type, which automatically fails open (FO) or fails closed (FC) when air supply fails to guarantee system safety.

• Position Feedback & Monitoring: Standard mechanical valve position indicator; limit switches, valve position transmitters and solenoid valves are optional to realize remote status monitoring and interlock control.

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