Watts 0121344 Valve 326010-701 or error codes on the

or error codes on the diagnostic display related to sensor failure

as well as several legacy R-22 applications requiring these specific setpoints

providing stable performance under varying thermal loads

3-inch frame construction is built for heavy-duty residential heating service

Watts 0121344 Valve 326010-701 or error codes on theThe Watts 0121344 (Series LF100XL 4 175) is a heavy duty 3 4 inch T&P relief valve designed specifically for hot water storage tanks and commercial water heater applications. Engineered with a lead free copper silicon alloy body, this valve provides critical automatic temperature and pressure protection for systems rated up to 105,000 BTU hr. The 100XL 4 model features an extended 4 inch thermostat with a specialized thermo bonded coating, ensuring