What are the common faults of solenoid valves? A solenoid valve is composed of the electromagnetic coil and magnetic core and is a valve body containing one or several holes. When the coil is energized or de-energized, the work of the magnetic core will make the fluid pass through the valve body or be cut off to achieve the purpose of changing the fluid direction. Solenoid Valve's electromagnetic components are composed of a fixed iron core, moving iron core, coil, and other components; the valve body part is composed of a sliding valve core, sliding valve sleeve, spring base, and so on. The solenoid coil is directly mounted on the valve body, which is enclosed in a sealed tube, forming a compact and compact combination. The failure of the Solenoid Valve will directly affect the action of the switching valve and the regulating valve. When the coil is energized or de-energized, the work of the magnetic core will make the fluid pass through the valve body or be cut off to achieve the purpose of changing the fluid direction.