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

Multi-turn electric actuators are classified by protection type: general purpose, outdoor type, and explosion-proof type. 2SB3 series linear stroke electric actuators are widely used in various industries such as power plants, petrochemicals, metallurgy, and public utilities. 

 The 2SB3 series is a modulating electric actuator that outputs thrust, with the output form being linear stroke. It is a derivative product of the 2SA35 series and is a device used to control the operation of the final control element (control valve) in closed-loop control systems.