Description
The Watts F383308 1-1/4″ Pressure Relief Valve 2830000 BTU 740 is a safety part intended to release excess pressure from heating hydronic systems when internal pressure exceeds it set limit of 45 PSI. It operates by automatically opening a discharge path once the system pressure rises beyond the calibrated threshold, preventing damage to boilers, piping and connected equipment. It is installed on boilers, hot water heating systems and closed-loop HVAC systems where thermal expansion can cause pressure buildup. It operates as a protective component that maintains better operating pressure conditions and prevents over-pressurization failures during thermal or operational fluctuations.
