Butterfly Valve, Flange Adaptor, Dismantling Joint manufacturer / supplier in China, offering DN40 PTFE Sleeve Lug Type Butterfly Valve, Lug Type Butterfly Valve with PTFE Sleeve Stainless Steel Disk Pn10/16, Ductile Iron, Stainless Steel, Nylon 5/11 Coated Ductile Iron, Aluminum Bronze Lug Type Butterfly Valve and so on.