What are the product categories of electric control valves? What is the difference?

Steam control valves are divided into pneumatic steam control valves, electric steam control valves and self-operated steam control valves.

From the appearance, the main difference between the three is the actuator. Pneumatic steam control valve is powered by air pressure, the actuator is disc-shaped, and electric steam control valve is powered by electricity. The actuator is a short cylinder with many coil gears and chips, which is very heavy. There is a big spring in the middle of the self-operated steam regulating valve, which looks like a robot.

Functionally, the basic error and sensitivity of the electronic control valve reach 0.3%, and there is no need to establish another air source, which is not suitable for occasions with high explosion-proof requirements. The basic error and sensitivity of pneumatic steam control valve reach 0.5%, so it is necessary to add an air source station, but it is intrinsically safe. Suitable for occasions with high explosion-proof requirements. The basic error and sensitivity of self-operated steam control valve are all within 5%, but it has a great advantage, that is, it does not need external energy and controls the valve by relying on the interaction between the pressure of the medium itself and its own spring. Because of its energy-saving and environmental protection characteristics, it is welcomed by the majority of enterprises.

In order to ensure the quality of pneumatic steam control valve, electric steam control valve and self-operated steam control valve produced by Shanghai Huyu, a unique feature is that the valve core and valve seat are all made of 304 stainless steel surfacing Stella alloy, which has the best wear resistance.