WATTS 100XL Series 0066100 Relief Valve, 3/4 in, MNPT x FNPT, Bronze Body

Used to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters up to 105,000 Btu/hr. It features a bronze body with NPT male inlet and NPT female outlet connections, unique thermostat with special thermo-bonded coating and a test lever. Model 100XL-8 is also available with 8 in (200 mm) extension thermostat. Series 100XL is ASME rated and CSA listed. Temperature relief is 210 deg F (99 deg C), Pressure relief range is 75 to 150 psi (5.2 to 10.3 bar). Standard pressure settings are 75, 100, 125 or 150 psi (5.27, 7.03, 8.79 or 10.55 bar).