An AC Solenoid Valve is a crucial component used in numerous industries for controlling the flow of fluids like water, gas, or air. By using electromagnetic force, these valves operate automatically to either allow or stop the flow of substances. This article delves into the principles, applications, and advantages of AC solenoid valves, providing a comprehensive understanding of this essential device.

Principle of Operation The basic working principle of an AC Solenoid Valve is quite simple yet effective. The valve consists of an electromagnetic coil, a plunger or valve core, and a spring. When alternating current (AC) flows through the coil, it creates a magnetic field that attracts or repels the plunger. This movement opens or closes the valve, thus regulating the flow of fluids. The solenoid valve can be classified into two major types based on its default state： Normally Open (NO) and Normally Closed (NC). In the NO type, the valve is open when no current is applied and closes when the current is switched on. In contrast, the NC type remains closed without current and opens when power is supplied.