For sale is a Dayton Speedaire Model 3Z530 Refrigerated Air Dryer. 1/3 HP Compressor motor. Operates on 1/60/115V single phase AC. 175 PSIG Maximum working pressure. 25 SCFM Throughput at 100 PSI and 100 degrees Fahrenheit (inlet air). 35 To 110 Degrees Fahrenheit operating temperature range. Uses Type R-12 refrigerant. NOTE: I have performed a basic "power on" test of this unit; it fires-up and runs quietly. I am unable to test for air drying capability. Several 3Z530's available. Most of these air dryers DO NOT HAVE ON/OFF SWITCHES installed, and will run when plugged in.