At its core, a Normally Closed solenoid valve is an electromechanical device that regulates the flow of fluids in a pipeline. The key feature that distinguishes it from other types of solenoid valves is its default state. In the absence of an electrical signal, the valve remains closed, preventing the flow of fluids. When an electrical current is applied to the solenoid, it generates a magnetic field, which moves a plunger or armature inside the valve, opening it and allowing fluid to flow through.

    This mechanism ensures that the system remains sealed until it is required to open. The ability to control fluid flow without constant manual intervention has made NC solenoid valves popular in numerous industries, ranging from water treatment to automation systems.