Butterfly Valve, Flange Adaptor, Dismantling Joint manufacturer / supplier in China, offering Ductile Iron Wafer Type Butterfly Valve Similar, Worm Gear PTFE Lined Concentric Lug Type Wafer Butterfly Valve with Aluminum Disc One Shaft/Stem, Full Rubber Lined Disc Univeral Connection Wafer Type Butterfly Valve with No Disc Pin Design and so on.