What's the difference between electric valve and pneumatic valve?

Electric valve and pneumatic valve are two valves with different driving devices, one is driven by electricity and the other is driven by air source. Except for the different driving devices, they have certain differences in action torque, applicable occasions and prices. Compared with pneumatic valve, electric valve has its own advantages and disadvantages. Electric valve is not affected by climate and air pressure, but its cost is high and its effect is not good in humid environment. Pneumatic valve is relatively low in cost and convenient to maintain, but it is easily affected by the weather, and the selection is mainly based on the needs of the use. Let's look at electric valves and pneumatic valves. 1. What's the difference between an electric valve and a pneumatic valve?

Valves can be divided into electric valves, pneumatic valves and manual valves according to different driving devices, among which electric valves and pneumatic valves are commonly used, so what are their differences?

1, the essential difference between electric valve and pneumatic valve lies in the use of different driving devices, that is, actuators, and the regulating valve itself is no different.

2. In terms of action torque, the action torque of pneumatic valve is greater than that of electric valve, and the action speed of pneumatic valve switch is adjustable, with simple structure and easy maintenance, and it is not easy to be damaged due to the buffering characteristics of gas itself during the action.

3. In terms of application, the power supply of electric valve actuator is power supply. If the circuit board or motor fails, sparks are easy to appear, so it is generally used in places with low environmental requirements and no danger; Pneumatic valve has high safety, and is more suitable for chemical and other occasions that need explosion protection.

4. In terms of price, compared with products with brand specifications, electric valves are generally more expensive than pneumatic valves, especially electric valves with explosion-proof function, which are more expensive; But if it is a manual pneumatic valve, the price may be more expensive than that of an electric valve.

2. Which is better, electric valve or pneumatic valve?

1 Advantages and disadvantages of electric valves

The advantage of electric valve is that it has a good effect on liquid medium and large caliber gas, and is not affected by climate and compressed air pressure. Disadvantages are high cost and poor effect in humid environment.

2. Advantages and disadvantages of pneumatic valve

Pneumatic valve has a good effect on gas medium and small diameter liquid, and the cost is not high and the maintenance is convenient. The disadvantage is that it is easily affected by the pressure fluctuation of air compressor, and it is easily affected by the water content of air compressor in winter in the north, which leads to the freezing of transmission part.

To sum up, electric valve and pneumatic valve have their own advantages and disadvantages, and the choice is mainly based on the actual needs of the use situation.