Multi-turn valve electric actuators, abbreviated as DZW type electric actuators, are driving devices used to achieve opening, closing, or regulating control of valves. Z-type electric actuators are suitable for gate valves, globe valves, diaphragm valves, plunger valves, throttle valves, sluice gates, etc. They can be used for rising stem valves as well as non-rising stem valves.

Multi-turn electric actuators are classified by protection type: standard type, outdoor type, and explosion-proof type.

By control method: conventional type, integrated type, and smart integrated type.

By connection type: torque type, power station type, and thrust type.

 The overall switch type is equipped with a remote control module, supporting remote jog or interlock operation, and outputting a 4-20mA current feedback signal. It does not require a matching electric control box/cabinet for centralized control. It supports on-site button control, remote DCS or PLC centralized control, and simultaneously outputs the corresponding 4-20mA feedback signal. It allows continuous operation via on-site buttons, as well as remote control, centralized control, and automatic control. It features internal phase sequence identification and phase loss protection functions.