The electric valve uses the motor as the power, and the pneumatic valve uses compressed air as the power.

(1) Advantages of electric valve: Good effect on liquid medium and large diameter gas, not affected by climate. Not affected by air pressure. Disadvantages: High cost, poor in humid environment.

(2) Pneumatic valve advantages: Good effect on gas medium and small diameter liquid, low cost, easy maintenance.

Disadvantages: Affected by the fluctuation of air pressure, it is susceptible to the influence of air pressure water in the northern winter, resulting in freezing of the transmission part and no action.

Generally, the pneumatic is faster than the electric, and the electric is a dual-purpose flashlight. And the price of pneumatic hand, gas dual use is relatively high.

Electric valves are used in some places with large pipe diameters, because pneumatic is difficult to do, but the stability of electric valves is not as good as that of pneumatic, the switching speed is slow, and the actuator will be stuck for a long time. Pneumatic valve switching speed, high precision, but the need for a stable air source.

The dynamic valve and the electric valve have their own strengths, and the two valves adapt to different working environments, generally according to the working conditions.

The difference between pneumatic valves and electric valves is that one uses gas and one uses electricity. There is also the pneumatic valve opening speed is much faster than the electric valve opening speed.

Pneumatic valves are mainly composed of pneumatic actuators and valves, using compressed air to drive the valve switch. Related accessories can be assembled to form switch type, regulation type, explosion-proof type, etc.

The valve uses the power supply pressure to control the valve, which is divided into two parts, the upper part is the electric actuator, and the lower part is the valve. There are switch type, explosion-proof type, regulation type, feedback type and so on.