Abstract: This invention involves a liquid drain system with liquid entrance and exit components to be used in or with compressed air systems. The system has a reservoir to hold accumulated liquid and a float in the reservoir that will be movable with the liquid level in the reservoir. So that liquid flows out of the system an air entrance and air exit is provided. The air entrance and air exit is controlled by magnetic and metallic components. When the float is in a lower position in the reservoir, the metallic component is in a closed position. When the float is in an upward position, the metallic component opens the flow passages to permit the liquid to exit the reservoir. An air inlet to the reservoir is provided to cause pressure to allow the liquid to flow out through an exit port.