Description
The Watts 174A-3/4-150 Relief Valve is a pressure safety component designed to automatically discharge excess pressure from liquid heating systems once the preset limit is reached. It is rated for 150 PSI and supports up to 2,445,000 BTU capacity, helping protect boilers and hot water equipment from overpressure conditions. Installed in commercial and residential heating assemblies, it opens when system pressure exceeds safe operating levels and reseals once normal conditions return. This valve is commonly used in HVAC applications as a vital safety component to maintain stable pressure and prevent equipment damage in closed-loop heating systems.
