Butterfly Valve, Check Valve manufacturer / supplier in China, offering Double Flanged Butterfly Valve with PTFE Liner and Polished Disc for Acid and Base, Premium En558 Ductile Iron Gate Sluice Valve for Water Systems, Lug Type Butterfly Valve with Nylon Coating Disc Worm Gear/Iorn/Aluminum Lever/Electric/Pneumatic and so on.