N/a manufacturer / supplier in China, offering Wafer Butterfly Valve with Turbine Actuator DN50-DN300 1.0-1.6 MPa Ductile Iron/SS304/-10° C~120° C, Pneumatic Dust Butterfly Valve DN50-DN300 0.1-0.6 MPa Ductile Iron/Stainless Steel GB -10° C~80° C, Expansion Butterfly Valve DN50-DN800; Pn 0.6-1.6MPa; -20º C~425 º C; GB/ANSI/JIS Standard and so on.