Operating on 120V single-phase power

facilitating a "go/no-go" signal to the control board to prevent the dangerous accumulation of unburned gas

this kit eliminates the guesswork of cross-referencing superseded parts

allowing for efficient drainage without the risk of thread galling or premature seal failure

Watts 0121451 Valve R-410A Operating on 120V single-phase powerThe Watts 0121451 (Model 140S 3 1 150) is a high capacity automatic reseating temperature and pressure relief valve engineered for protection in commercial hot water supply systems. Designed for heavy duty tank tappings, this 1 inch valve features a 3,085,000 BTU hr steam discharge capacity and a standard 150 psi pressure relief setpoint. As a veteran grade commercial T&P relief valve, it utilizes a bronze body and a 3 inch stainless steel thermostat