Versatile Mounting: Designed for multi-positional mounting within the low-voltage control section

It is designed to be threaded into existing 3/4" NPT ports on the boiler or remote sensor manifold

Application Versatility: Suitable for both split-system heat pumps and central air conditioning units using R-22 refrigerant

Reference the model number on your furnace data plate

Watts 0121430 Valve 326058-758 Versatile Mounting: Designed for multi-positionalThe Watts 0121430, also identified as the LFLLL40XL 150, is a high capacity automatic reseating temperature and pressure relief valve designed specifically for commercial and large residential hot water supply tanks. Featuring a 3 4 inch NPT male inlet and female outlet, this lead free T&P valve is engineered for systems requiring a high ASME steam relief rating of up to 1,437,000 BTU hr at 150 psi. The extended shank design, measuring 3 21 32 inches,