Electric Valves, Pneumatic Valves, Control Valve manufacturer / supplier in China, offering Three Piece 304 Stainless Steel Ball Valve 3PC High Pressure Screw Thread Internal Thread DN15/20/25/32/40/50, High-Quality Butterfly Valve with Electric Actuator and 15-Month Warranty, Butterfly Valve with Electric Actuator for Manual and Pneumatic Power and so on.