Apply to opening and closing parts linear travel valves. Such as gate valve, globe valve, diaphragm valve, gate, sluice valve, etc. Apply to open,close and modulate valve. It’s  essential actuating device for remote control, centralized control and autocontrol valve. Level of protection: IP65.（the highest is IP67). Output range of torque: 100~5000NM. Output range of speed: 12-48rpm. 
According to control mode,following products are divided into：standard switch type、
integrated switch type and modulating type. 
According to connection mode,following products are divided into：torque type、
power station type and thrust type. 
Power supply: 
Normal: triphase 380V (50HZ)   
Special: single phase 110V. single phase 220V. triphase 415V.660V, (50HZ.60HZ)
Environment temperature : -20·+60℃(special order-60~+80℃)
Relative humidity≤95%（25℃）