Industrial SC23,SC46 EC5 Unloader Valve For Air Compressors

031-0057 Unloader Valve Elbow for Sandborn Industrial Air SC23/SC46 compressors uses a 1/4-inch tubing connection and is sold as a direct replacement part for Sandborn and Industrial Air pump assemblies. The listing confirms compatibility with model SC23 and SC46, as well as the 040-0211 and 040-0212 variants, and brands it under SANBORN/COLEMAN/INDUSTRIAL AIR with the part number 031-0057. This unloader valve elbow is designed to be installed in place of a worn or damaged unit, providing a straightforward, standard replacement option for maintenance and repair tasks. Weight is approximately 1 lb and packaging dimensions are about 20 x 12 x 12 inches, reflecting a compact form factor suitable for storage and field service. Installation steps are described as removing the old valve, installing the new 031-0057 unit, and adjusting as required to restore proper unloading operation. It is compatible with a range of Sandborn and Industrial Air pumps, including the SC23 and SC46 series.