KATA API6D ECCENTRIC HALF BALL VALVE 2"~56"

Eccentric half ball valve Principle of work When the eccentric semi-ball valve is driven by the stem to move around the rotary center the orbiting of the ball is a cam-like eccentric and it goes downward into the valve to have the valve closed and kept sealed. Because of the available with the above principle of cam, the force of the closing part which acts at the seat ring will be gradually enlarge during open and close, that is the surface of the part contacts the seat ring