Butterfly Valve, Flange Adaptor, Dismantling Joint manufacturer / supplier in China, offering Wafer Butterfly Valves with Nylon 5/11 Coated Ductile Iron/Aluminum Bronze, High Quality Double Flanged Valve/Wafer Butterfly Valve, Resilient Seated Ductile Cast Iron Wafer Butterfly Valves with PFA Rubber Lining API China Factory-Made and so on.