What is the difference between electric valves and pneumatic valves?

Electric valves operate quickly and are suitable mainly for locations where there is no instrument air supply; they are easy to install and use. However, their safety performance is poor, making them unsuitable for hazardous environments such as those prone to fire and explosion where high levels of explosion protection are required. Their performance is not as stable as that of pneumatic valves, and they require more maintenance； Pneumatic valves have a slightly slower operating speed compared to electric valves, but they still meet the control requirements adequately. They offer high safety levels and are widely used in environments where explosion prevention is crucial, such as those with flammable and explosive materials. However, installation and use require a gas supply; it is more cost-effective to use multiple units, allowing for the establishment of a gas supply base. This post was last edited by mlxx2008 on 2008-11-3 23:26.]

Pneumatic valves have a faster operating speed than electric valves

There’s a conflict between the 2nd floor and the 4th floor – which one is correct? ? ? Please ask an expert to answer~~~

Pneumatic valves can be used in explosion-proof areas, making them safer. But a gas source is required.

Is the operating speed of a pneumatic valve faster than that of an electric valve, or is it the electric valve that is faster?

There are many options available for pneumatic control valves, and they operate reliably. Domestic electric control valves are rare; most imported ones are OEM products. Our company doesn’t use it well.

Of course, the electric valve is faster; gas can’t outpace electricity anyway

Electric valves have a faster speed but lower safety performance. Pneumatic valves require an air supply, have a relatively slower speed, but offer higher safety performance; however, they need an air supply

After reading everyone’s posts, I’d like to share my insights: There are electronic control valves and pneumatic control valves. Electronic control valves contain a proportional control module within their valve heads, which allows for proportional adjustment of the set parameters. Pneumatic control valves can be used for proportional control only after being equipped with a pneumatic valve positioner. When performing proportional control, it is better not to use electric valves, as their response speed is very slow; pneumatic valves are faster. Everyone should use products with different performance characteristics in different industrial control environments to achieve the desired efficiency.