The solenoid valve is a device that, after the magnetic coil is plugged in, forms a magnetic attraction to release the pressure of the spring and push the valve core. It only has a magnetic coil, a simple structure, and a low price. It only needs to complete the power switch.

Electric valves are classified into shut-off valves and regulating valves based on the position of the valve seat driven by the motor and the valve core. The shut-off valve is a two-position type in operation, namely fully open and fully closed. The regulating valve is equipped with an electric valve positioning instrument on it, and the dynamic stability of the gate valve is adjusted in one position based on closed-loop control.

Comparison of the main uses of electric valves and solenoid valves: Solenoid valve: Pilot-operated diaphragm solenoid valves are used for power switch control of liquid and gas pipelines and are two-position DO control. It is generally used for the control of medium and small-sized pipelines. Electric valve: It is used for the analog input adjustment of the total flow of liquid and gaseous substances in the daily air system software pipeline, and is AI-controlled. In the control of large and medium-sized gate valve daily air system software, electric valves can also be used for two-position power switch control. Solenoid valve: As long as it serves as a switch quantity and is controlled by DO, it is mainly used for small pipeline control and is commonly found in pipelines with a diameter of DN50 and below.