For sale is a Sullair Model SR-250 Refrigerated Compressed Air Dryer. Manufacturer's numeric description: 02250128-205. Serial No. 2459120002. 174 PSIG Maximum rated air pressure. Uses Type 407C refrigerant. Refrigerant quantity: 1.7Kg / 60 Oz. Please review the photographs for complete OEM tag information. We did power it, it does run and it seems fine. Comes from a closed down Caterpillar mining products factory, and as you can imagine, Caterpillar takes good care of their stuff and pays servicers big $$$$$$$ to keep equipment in top shape. I also have a Sullair Compressor for sale.