A solenoid valve is an electromechanical device used to control the flow of liquids, gases, or other fluids in a pipeline or system. The valve uses a solenoid, which is an electromagnet, to operate the valve’s mechanism. When an electrical current passes through the solenoid, it generates a magnetic field that moves a plunger or armature inside the valve. This action opens or closes the valve, either allowing or blocking the flow of fluid through the system.

    Solenoid valves are commonly found in both normally open (NO) and normally closed (NC) configurations. In a normally open solenoid valve, the valve remains open when the solenoid is not energized, allowing fluid to pass through. Conversely, a normally closed solenoid valve stays shut when not energized, blocking the fluid flow until the solenoid is activated.