The difference between mechanical valve and pneumatic valve

Mechanical valve refers to the action of controlling the valve core by machinery, such as manual directional valve and electric directional valve. Pneumatic directional valve means that the action of valve core is controlled by gas pressure, such as shuttle valve and quick exhaust valve. Some valves are a combination of pneumatic and motor. For example, the left and right positions of pneumatic reversing valves are controlled by pneumatic, and the middle position is controlled by springs.

The main differences between them are: the valve has the same function, but the core action control mode is different, the pneumatic control pressure is small, the action is reliable and the response is fast, and the pneumatic power source is needed; The response of motor control is not as fast as pneumatic control, but the structure is simpler than pneumatic control, for example, a spring can realize control.