Check the listing for details. Water Heater Gas Thermostat White Rodgers 37C73U-172 (37C73U-641). Condition: New. Listed at 128.88 USD. Water Heater Gas Thermostat White Rodgers 37C73U-172 (37C73U-641) White Rdogers Gas Water Heater Thermostat part number 37C73U-172.For AO Smith.SpecificationsInlet Size 1/2 NPTOutlet Size 1/2 inverted flareMounting 3/4 NPT, 4-1/2 bulb insertion lengthPilot Connection 1/4 compression fitting Shank Length 2-1/4 inchApplication Natural GasWater Colum (WC) 4.0 Main Main Burner 4.0 PilotTemperature Range 70 to 160F (21 to 71C) Threaded Right HandReplacement for 37C73U-641FeaturesAutomatic shut-off of main and pilot gas in the event of pilot failurePilot gas cock with safe lighting feature and filterTemperature adjustmentManifold pressure tapBuilt-In E.C.O. (Energy Cut Off) non-cycling high limit Product Details BrandWhite RodgersManufacturerWhite RodgersProduct TypeGas Water Heater ThermostatMpn37C73U-172 Emerson White-Rodgers part number 110N-172Gas Water Heater Thermostat part number 37C73U-172For AO SmithReplacement for 37C73U-641 Check out my other items. -Powered by