Economically priced DryStar air dryer cools compressed air by mechanical refrigeration to a 33 to 39F pressure dewpoint. Condensed water is removed through an automatic drain valve. 35 CFM airflow. 1/2in. connection. DryStar dryer is simple to install with a quick-fit electrical connection and features low power consumption. Uses environmentally friendly R134A refrigerant. Great for applications that require the removal of any water in compressed air.