Wafer Butterfly Valve, Flange Butterfly Valve, Lt Butterfly Valve manufacturer / supplier in China, offering Al-Br Aluminum Bronze Brass Ductile Iron Stainlesss Steel Lug Type Butterfly Valve, Pn6 Pn10 Pn16 Pn25 150lb Lug Type Wafer Industrial Butterfly Valve, Ductile Iron Di Ggg40 Ggg50 Lug Type Wafer Control Industrial Butterfly Valve and so on.