3-PC Trunnion Mounted Ball Valve Cast Steel WCB Gear Operated

The trunnion mounted ball valve has been designed with two floating seats, which are movable under the pressure of medium. Under the bottom of seats, seat pre-loading springs are positioned to ensure two floating seats attach the ball surface tightly. The ball is fixed by upper and lower trunnions, so the seat rings don't afford too much flow pressure force when valve is in closed position. During service, pressure of medium pushes the front seat against the ball, forming a bubble tight seal.

Small operating torque, small deformation on seats, reliable sealing performance, long service life are the main advantage of trunnion mounted ball valve. Trunnion mounted ball valves are widely used in long distance pipeline and normal industrial pipelines that can withstand various kinds of corrosive or noncorrosive flows.