What are Applications of Solenoid Valves?

Solenoid valves are used in several applications including water, oil and air. They are small in size and require minimal maintenance. They can be triggered to open and close by electrical signals. They are available in a variety of shapes and sizes for different needs. They are suitable for use in harsh industrial environments and are highly durable. The main application for solenoid valves is to control and regulate liquid flow. They are also useful in heating, cooling and washing processes.

The solenoid consists of a valve body with various orifices and a coil. The coil is surrounded by a ferromagnetic core or plunger. When the coil is energized it creates a magnetic field that attracts the core and causes linear motion of the plunger. The linear movement of the plunger opens or closes the various orifices in the valve body.
Depending on the design of the valve there may be a disc or seat to stop fluid flow when it is closed. The disc can be made of corrosion and erosion resistant materials such as PTFE or stainless steel. In some designs, diaphragms or bellows can be used to block the fluid flow instead of a disc.

The core spring and shading ring are usually made of stainless steel to improve the performance of the core. The valve housing and core tube can be made of aluminum, brass or plastic. The material used is chosen depending on the type of process fluid and its temperature range.