... Electric Valve Actuators are designed for two position valves and suitable for valves which stems move linearly, ... DataPower voltage: 380V,50Hz(380V~660V,50Hz,60Hz for special order) Control voltage: 220V,50Hz(220V ... ~240V,50Hz,60Hz for special order) 2.1Service environment:2.1. ... explosive media.2.1.4 Protection IP55 (IP68 for special order) 2.1.5Short-time duty, ...