What is the hydraulic ball valve? Hydraulic ball vlave is a kind of valve which the opening and closing parts(ball) are driven by the valve stem , and around the ball valve axis for rotating movement of the valve .Max pressure could be up to 10000 PSI , the connection type has: female thread, weld, double ferrules . It includes 2 way ball valve and 3 way ball valve . More infomation please contact hydraulic ball valve manufacturer.