1. Accept continuous gas signal and output linear displacement (continuous electrical signal can be received after power/gas conversion device). Some can be equipped with angular arm displacement after outputting the rocker arm.

2. There are positive and negative functions.

3. The moving speed is large, but the speed will be slower when the load increases.

4. The output force is related to the operating pressure.

5, high reliability, but the valve can not be maintained after the gas source is interrupted (can be maintained after the retaining valve).

6. Inconvenient to implement segmentation control and program control.

7, easy maintenance and adaptability to the environment.

8, the output power is large.

9, with an explosion-proof function.