The solenoid valve is a kind of shut-off valve that automatically opens and closes by electromagnetic force. It is mainly used to control the flow of fluid (liquid or gas). It has been widely used in many industrial equipment, the following are its main functions:

Control fluid flow

The most basic function of an electromagnetic valve is to control the flow of fluid in a piping system. By utilizing electromagnetic force, the valve can automatically open or close, thus controlling the flow of fluid. This control can be automated or remotely controlled, making it very flexible and efficient.

Applied in refrigeration and air conditioning systems

In refrigeration and air conditioning systems, solenoid valves are commonly used as remote shut-off valves, control mechanisms for two-position regulation systems, or safety protection devices. They can be applied to various media such as gases, liquid refrigerants, and lubricating oils. For example, in early small and medium-sized unitary systems, solenoid valves were connected in series on the liquid line before the throttling device and linked to the same start switch as the compressor. When the compressor starts, the solenoid valve opens, connecting the system piping and allowing the air conditioning system to operate normally; when the compressor stops, the solenoid valve automatically cuts off the liquid line, preventing the refrigerant liquid from continuing to flow to the evaporator and avoiding liquid slugging during the next startup of the compressor.

Achieve vacuum treatment

Vacuum solenoid valves can utilize electromagnetic principles in pipeline systems to achieve vacuum treatment of the pipes while enabling electromagnetic control. This can significantly impact the entire operating state of the pipeline system. Using vacuum solenoid valves can also effectively avoid the influence of other irrelevant factors on the pipes, thus making correct adjustments to the working condition of the pipeline system.

Industrial automation control

The solenoid valve plays a crucial role in industrial automation control systems. It can work with different circuits to achieve the desired control, ensuring both precision and flexibility. There are various types of solenoid valves, each serving different functions in the control system, such as check valves, safety valves, directional control valves, and speed control valves.

Other applications

In addition to the above applications, solenoid valves are also widely used in hydraulic systems, pneumatic systems, fire protection systems, gas systems and many other fields. Depending on different application scenarios, different types of solenoid valves can be selected, such as water solenoid valves, steam solenoid valves, refrigeration solenoid valves, low-temperature solenoid valves, gas solenoid valves, fire protection solenoid valves, etc.

To sum up, solenoid valve plays an irreplaceable role in modern industry and daily life. It can not only accurately control the flow of fluid, but also work reliably in various complex environments.