This 1 in lead free automatic reseating temperature and pressure relief valve with a 3 in thermostat is installed directly in tank tapings and is used in commercial applications to provide automatic temperature and pressure protection for hot water supply tanks and hot water heaters. It features a lead free construction body with FNPT inlet and FNPT outlet connections, thermo-bonded coated thermostat, tamper resistant bonnet screws, automatic reseating feature and test lever. The temperature relief is 210 deg F and the pressure relief is 150 psi.