Condition: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ... Gas Water Heater Thermostat Valve Robertshaw 110-206 (R110RTSP)Robertshaw part number 110-206.The Robertshaw 110 Series Water Heating Gas Valves are designed for universal replacement applications in water tanks. All models feature a built-in, non-cycling Energy Cut-Off (ECO) system to shut off all gas to the water heater in case of excessive water temperatures. The ECO is designed to detect over-temperature conditions and to open. Once opened, the control will not function and a new replacement will be required.Series Application Water Heater Thermostat Uni-KitOutlet Size 1/2" Inverted FlarePressure Regulation 3.5" WC Natural GasShank Length 2-3/8"Sensing Tube 5-1/2"Inlet Size 1/2" PipeFlow Setting 45,000Temperature 160F (71C)Factory Part Number R110RTSPReplacement for numbers :222-41805-04A BRADFORD-WHITE3200563, 33065-203763U-128 WHITE-RODGERS3773U-182 WHITE-RODGERS37C73U-197 WHITE-RODGERS37C73U-198 WHITE-RODGERS66023 UNI-LINE66143308C Invensys Climate Controls66-144-218 ROBERTSHAW66-144-243 ROBERTSHAW66-144-285 ROBERTSHAW66-148-308 ROBERTSHAW66180343 BRADFORD-WHITE66183368C Invensys Climate ControlsAP8555R-1 RHEEMAP8555U RHEEMR110RTP ROBERTSHAWR110RTSP ROBERTSHAW