Watts 0004494|WW0004494 - 1XL-4-1/2-150# OBS SEE WW0121325

This 1/2 inch temperature and pressure relief valve is designed to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters up to 15,000 BTU per hour. This two in one relief valve provides the most proven and cost effective means to protect against excessive temperature and pressure emergency conditions. It features a bronze body construction, NPT male inlet and NPT female outlet connections, a unique entended thermostat with special thermo-bonded coating and test lever. The temperature relief is 210 degrees (99 degrees C) and the pressure relief is set at 150 psi (10.6 bar).