Gate Valve, Globe Valve, Check Valve manufacturer / supplier in China, offering DIN Standard Cast Iron Wafer Butterfly Valve Industrial Usage Manual Flange Centre Sealing, DIN Standard Cast Iron Wafer Butterfly Valve Normal Temperature DN50-DN1000 D71X/F-10/10q/16/16q, Standard Cast Manual Iron Wafer Flange Butterfly Valve DIN Soft Sealed and so on.