Motorized Valve, Electric Actuator for Butterfly Valve manufacturer / supplier in China, offering Hl4-100ai High-Efficiency AC220V Electric Valve Actuator Modulating 4~20mA with Reliable Warranty, Premium 304 Stainless Steel Electric Ball Valve for Industry, Hl05 Electric Valve Actuator Control Actuator for Ball and Butterfly Valves - CE Certified and so on.