How to choose the correct electric valve and pneumatic valve

How to choose the correct electric valve and pneumatic valve

First, the electric valve motor power, pneumatic valve using compressed air as power.

1, electric valve advantages: good effect on the liquid medium and large diameter gas, free from the impact of the climate. Not affected by the pressure of air pressure.

Disadvantages: high cost, not good in humid environment.

2, pneumatic valve advantages: good effect on the gas medium and small diameter liquid, low cost, easy maintenance.

Disadvantages: By the impact of air pressure fluctuations in the northern winter vulnerable to air and water moisture effects, resulting in transmission part of the freeze, no action.

How to choose the correct electric valve and pneumatic valve

Second, the general pneumatic faster than electric, electric dual-use are flashlights. The pneumatic handle, gas dual-use price is relatively high.

Third, the electric valve for some large diameter place, because the pneumatic is difficult to achieve, but the stability of the electric valve than the pneumatic, slow switching, the implementing agency for a long time there will be stuck teeth phenomenon. Pneumatic valve switching speed, high precision, but the need for a stable gas source.

Fourth, the slow movement of the electric valve can be explosion-proof electric valve is not a lot of brands; pneumatic valve quickly, the price is relatively unexplosive electric end (key pneumatic valve with what accessories, accessories with a large brand will be more expensive than the electric valve).

Related to the chain valve is also electric, and why?

1, according to the local weather, if the humid climate valve can not be used, because the gas source with water.

2, the electric valve can also achieve the interlock function will not increase the cost, the pneumatic interlock will increase the protection valve, increase the cost.

Electric valve and pneumatic valve advantages and disadvantages:

Under what circumstances need to use electric valves instead of pneumatic, when do you need to use pneumatic instead of electric valves, what are the advantages and disadvantages between them, the price it. Pneumatic valve operating distance than the electric valve, pneumatic valve switching speed can be adjusted, the structure is simple, easy to maintain, the action of the buffer due to the gas itself, not easily damaged due to stuck, but it must have gas, and its control The system is also more complex than electric valves.

Electric valve driven by electricity, explosion-proof requirements of the occasion does not apply, such as the surrounding environment dispersed a large number of easy-to-gas, you can only rely on pneumatic. Pneumatic response time slower than electric, as electric precision, pneumatic valve is powered by gas. The electric valve is electrically converted to electromagnetic energy as a power, the sensitivity of the electric valve than the pneumatic valve, less than the safety and reliability of the pneumatic valve to the maintenance is not as simple as the pneumatic valve, the power is less than the strong pneumatic valve.

Pneumatic valve control than the electric valve to the complex. And all costs are very expensive, if it comes to automatic control, solenoid valve must be added, and the sensitivity of electromagnetic valve directly affects the pneumatic valve. I am more in favor of the statement on the first floor.

Electric valves are available as long as there is electricity. In many factories, many tools and equipment use compressed air. In this case, pneumatic valves may be used as they are readily available. Responsive, safe and reliable, many plants that require high levels of control set up compressed air stations for pneumatic instrumentation controls. Electric is to electricity. Pneumatic valve is obviously better than the electric valve, but to the gas source so inconvenient gas source where the electric valve has a gas source are not electric valve.