Circulating Pump Motor Compatible with Brand Bell and Gossett Compatible with Grainger Part Number 5YN75 Compatible with Manufacturer Model Number 623S Compatible with Pump Type In-Line Circulating Pumps Compatible with Series W05121 Compatible with Series Family BE612S BE612T E612S E612T E614S E614T E622S E622T E624S E624T Horsepower 1 3/4 Maximum Ambient Temperature 104 Degrees F Maximum RPM 1 725 RPM Minimum Ambient Temperature 32 Degrees F