Use of Refrigerated Air Dryers allows for the best performance of our oil free scroll compressors. These units incorporate an electronic control to monitor all functions. A hot gas bypass valve avoids the formation of ice in the dryer. The vertical flow layout allows for easy access to the drain valve. Refrigerant air dryers are the most commonly used dryers in the industry and consist of an air-to-air heat exchanger and an air-to-refrigerant heat exchanger.