Motorized Valve, Electric Actuator for Butterfly Valve manufacturer / supplier in China, offering Electric Heli Brand High-Efficiency Hl-20 Triple Offset Butterfly Valve for Industrial Use AC220V, Heli Brand Hl Small Size Actuator Control Electric Wafer Soft Seal Butterfly Valve, Electric Wafer Cast Iron on-off Butterfly Valve for Efficient Flow Control and so on.