Pneumatic Actuator, Electric Actuator manufacturer / supplier in China, offering Ductile Cast Iron Ci Di Body Hand Wheel Wafer Butterfly Valve with PTFE Full Lining DN50 to DN600, Weight Light Fluid Shut off Valve Wafer Butterfly Valve for Chemical Industrial Leak Control, Automatic Manual Stainless Steel Nodular Cast Iron Concentric Wafer Butterfly Valve with Soft Seat Lever/Pneumatic/Electric Actuator and so on.