TRUNNION MOUNTED BALL VALVE
What is Trunnion Mounted Ball Valve? The trunnion ball valve is a form of quarter-turn valve which uses a hollow, perforated and fixed/supported ball to control flow through it. The trunnion is available for all sizes and for all pressure classes but they are not suitable for throttling purposes. Trunnion mounted ball valves , uses a spring mechanism or line pressure assistance to drive the upstream seat against the stationary ball. The surface area exposed to the pressure through the relatively small passageway is actually just the back of the seat. Trunnion ball valve is fixed, as it does not move with medium pressure. Trunnion ball valve has floating seats. The seats of this valves move with medium pressure to tight the ball and seal ring to ensure sealing reliability. This is widely used in valves with high pressure and big sizes Trunnion ball valve features the front ball sealing design structure. How Does it W...