Wafer Butterfly Valve, Flange Butterfly Valve, Lt Butterfly Valve manufacturer / supplier in China, offering Gear Box Stainless Steel CF8 CF8m Body Disc EPDM Seal Wafer Butterfly Valve, Alloy Worm Gear Operate 8inch DN200 PTFE Seat PTFE Disc Pn16 150lb Wafer Butterfly Valve, Pn16 Low Pressure Handle Actuator Hydrochloric Acid Ggg50 Ductile Iron PTFE F4 Butterfly Valve and so on.