Electric device is called in different industries. It is called valve electric device in the industrial pipeline valve industry and electric device in the instrument industry, but there is no clear distinction in the industry now.

　　Angle stroke, straight stroke and multi turn electric devices are classified according to the mode of motion. It is a driving device that can provide linear or rotary motion. It uses some driving energy and works under the action of some control signal. No matter which classification has its own characteristics.

　　Angle stroke, straight stroke and multi turn type:

Most of the angle travel and straight travel electric devices are modified on the basis of the multi turn type: based on the multi turn type, the 0~90 ° angle travel electric device is composed of a worm gear two-stage reduction box; It is equipped with a screw rod component to form a straight stroke electric device.

Angle stroke: 0~90 ° angle stroke, used to control angle stroke valves such as ball valve, plug valve, butterfly valve and shutter valve;

　　Multi turn electric device:

Multi turn type: the valve can only be opened and closed when it runs more than 360 °, mainly used for stop valve, pipe clamp valve and diaphragm valve;

Straight stroke: It outputs force and generates displacement. It is mainly used for gate valve and sliding plate valve.

Commonly used to form electric valves or electric control valves with various valves (such as gate valves, control valves, single seat valves and other valves with linear motion)

Use AC or DC as the driving energy; It is divided into two categories according to the action mode (electric switch type and electric regulation type)

The advantages are convenient access to energy, fast signal transmission speed, long transmission distance, convenient centralized control, high sensitivity and accuracy, convenient coordination with electric regulating instruments, and simple installation and wiring.

The disadvantage is that the structure is complex, the average failure rate is higher than that of pneumatic electric device, and it is suitable for places with low explosion-proof requirements and lack of gas sources.