HPR Series non-cycling refrigerated compressed air dryers offer the right combination of technology and simplicity to keep your air system at a dry, 38°F (+3°C) pressure dew point, from 5 through 500 scfm. These dryers are built for durability, in a space-saving design. Sturdy sheet steel is formed and protected by an epoxy-based powdercoat finish. Reliable reciprocating refrigeration systems use environmentally friendly R-134a refrigerant. R-134a is known for its ability to maintain stable temperatures to protect the integrity of the 38°F (+3°C) pressure dew point. HPR Series can handle the pressure.