A solenoid valve works by using an electrical current to create a magnetic field that opens or closes a valve:
Energize the solenoid When an electrical current passes through the solenoid's coil, it generates a magnetic field.
Move the plunger The magnetic field exerts a force on the plunger, which is the moving part of the solenoid. The plunger is made of a soft magnetic metal that can be easily magnetized and demagnetized.
Open or close the valve Depending on the valve's design, the plunger's movement opens or closes the valve's orifice, which controls the flow of gas or liquid.
De-energize the solenoid When the electrical current is cut off, the magnetic field collapses and the spring returns the plunger to its original position.
Solenoid valves are versatile and can be used in a wide variety of industries and applications. Some common uses include:
Air handling units: Solenoid valves can isolate a second expansion valve and coil until it's needed.
Refrigeration systems: Solenoid valves can control the flow of hot refrigerant into the evaporator during the defrost cycle.
Beverage production: Solenoid valves can precisely control the flow and mixing of fluids.
