AUTO DRAIN VALVE

An auto drain valve comprises a valve body wherein a piston having a piston rod with sealing disk and sealing member which is movable within said valve body wherein air vent and liquid outlet and closes simultaneously. Further the valve body is connected to the bowl ; valve body consisting of air vent , liquid inlet ′ and liquid outlet ; moveable piston , solenoid coil surrounding the piston rod ; spring and spring resiliently biasing on the Piston seal air vent and liquid outlet in its de-energized condition; when the solenoid coil is energized and Piston moves away from air vent and liquid outlet simultaneously, liquid is drained form bowl through liquid inlet ′ into valve body and drained out form liquid outlet