Economically priced DryStar air dryer cools compressed air by mechanical refrigeration to a 33° to 39°F pressure dewpoint. Condensed water is removed through an automatic drain valve. 42 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.