Watts No. 1l-2, Temperature And Pressure Relief Valve, 150 Psi, 1/2” In BoxThis 1 2 inch temperature and pressure relief valve is used in water heater and hot water storage tank applications to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters up to 15,000 BTU hr. It features a bronze body with NPT threaded male inlet and NPT threaded female outlet connections, 2 inch short thermostat with special thermo bonded coating and test lever. It is CSA listed. Temperature r relief