A Normally Closed solenoid valve is a type of electromagnetic valve that operates based on the principle of electromagnetism. It is designed to stay in the closed position when there is no power applied to the solenoid coil. When the valve is energized, the solenoid generates a magnetic field that moves an internal plunger or diaphragm, which opens the valve and allows the fluid to flow through. As soon as the power is turned off, the valve returns to its default closed position, stopping the flow of fluid or gas.

    This behavior makes the NC solenoid valve an essential tool in systems where safety and automatic shutoff are crucial, particularly in environments where the loss of power could pose a risk if fluid continues to flow.