Description
The Watts 0383802 1-1/2″ Pressure Relief Valve 740-065 is a pressure protection component used to release excess pressure from closed fluid systems when preset limits are exceeded. Installed in boilers, hydronic piping assemblies, and pressurized heating equipment, it automatically releases internal pressure when operating conditions exceed specified limits during system operation. Its operations within the pressure control assembly support equipment protection, pressure stabilization, and coordinated system performance across applications. It is used in HVAC systems where controlled pressure release and dependable safety response are required for continuous equipment operation and system protection.









