Part Number: 8.717-747.0 Cross Reference Part Number(s): 7-10050, 87177470 Manufacturer’s Part Number (MPN): R622-CFF This 8.717-747.0 Fisher Low Pressure Gas Regulator is also known as a Second Stage Gas Regulator as it reduces the outlet pressure from a first stage regulator. Fisher second-stage regulators are easily identified by their Palm Green Color. UL Listed.