Wafer Butterfly Valve, Flange Butterfly Valve, Lt Butterfly Valve manufacturer / supplier in China, offering DN50-DN2000 Stainless Steel ASTM A216 Wcb Carbon Steel Lug Type Knife Gate Valve with Customization High Quality, U Flange Type Short Flange Ship Valve Ductile Iron Ggg50 Flange Type Butterfly Valve with Pn10/Pn16 150lb, Johnson Controls Electric Actuator 220V Ductile Iron Wafer Butterfly Valve with DIN Pn16 1.6MPa Standard and so on.