GAS VALVE, White Rodgers (An Emerson Brand) #37C73U-622 Storage Tank Manual Water Heater Temperature Control Gas Valve. For State, Rheem, Ruud & Richmond WAter Heaters. For Natural Gas Only, 4" WC, & up to 75,000 BTU/hr., with 1/2" deep Brass Temperature Sensor Probe Insert Housing. This Gas Valve has been Cleaned & Bench Tested for proper function & temperature accuracy. This is a Pre-owned Gas Valve & is sold with a 90-day Warranty if Installed by a Licensed Plumber.