Schulz ADS 20 Non-Cycling Refrigerated Compressed Air Dryer (20-25 CFM 115V 1-Phase) Excellent Performance Even where ambient & inlet temperatures are elevated Nominal air pressure of 100 PSI; 232 PSI maximum. Energy Efficient Sizing Matches the compressor's displacement, saving energy Electronic Controller Digitally shows temperature & dew point Controls the drain valve through a timer Controls the condenser fan through a probe High-Efficiency Compressor Circulates the refrigerant through the system Totally New Design Delivers high dependability & low power consumption Quick disconnect automatic drain valve doesn't need special tools Requires a 115V, single phase circuit Environmentally Friendly Refrigerant R134a is effective & easier on the environment Compact Footprint Conveniently sized 18-11/16" x 14-9/16" x 18-11/16" Weighs only 55 pounds; easy to install 1/2 inlet and outlet.