Products DetailsWenzhou Yuzheng Valve Pipe-Fitting Co.,Ltd is one of the leading China dutile iron flanged butterfly valve manufacturers,Website: , welcome to wholesale cheap dutile iron flanged butterfly valve, wafer butterfly valve, ductile iron butterfly valve, flanged butterfly valvefrom our professional factory.Butterfly valves are used for throttling,regulating flow volumes and full on, full off control. Best suited for applications having to do with isolation and control of liquids,gases or slurries, the valve disc is located inside the valve body, and pivots 90 degree around the stem to regulate the flow. Butterfly valves are lightweight and easy to mount.