Wafer Butterfly Valve, Flange Butterfly Valve, Lt Butterfly Valve manufacturer / supplier in China, offering 3 Inch DN80 80 mm Aluminum Alloy Valve Body CF8 Disc Wafer Butterfly Valve, 3inch DN80 80mm Aluminum Alloy Valve Body CF8 Disc Wafer Butterfly Valve, No Lug Aluminum Alloy Body EPDM Seat Stainless Steel Disc Industrial Wafer Butterfly Valve and so on.