is closed. According to the Qizhuang.com query, when the power is turned on, the solenoid coil generates electromagnetic force to lift the closing member from the valve seat, and the valve opens. When the power is turned off, the electromagnetic force disappears, and the spring presses the closing member on the valve seat, the valve closes, and the water separator After the solenoid valve core is removed, the valve will be in a closed state.