The trunnion ball valve is equipped with a movable seat ring which can generate displacement under the pressure of medium. In case that any medium pressure exists, the pressure will press the valve seat seal ring onto the ball tightly, guaranteeing the sealing performance of the ball valve.
The trunnion ball valve has many advantages, Small torque, small seat deformation, stable sealing performance and long service life. It's suitable for high pressure and large caliber occasions.
3.DBB Seat (Double Block and Bleed)
4.Low Operating Torque
5.Emergency Sealing Device
6.Safety Relief Device
7.Reliable seat sealing structure
8.Automatic Pressure Relief in Middle Cavity of Valve
9.Blow-out Proof Stem
Main Materials: carbon steel, alloy steel, stainless steel, etc.
Body material: WCB, CF8,CF8M,CF3,CF3M ,WC6,WC9,LCB, LCC, LC1,F316 etc.