Description
The Watts 0369021 3/4″ Pressure Relief Valve 150 PSI is a safety fitting created to release excess pressure from fluid or heating systems when internal levels exceed a preset threshold. It automatically opens to discharge pressure buildup and closes once normal operating conditions are restored. HVAC systems use this type of valve in boilers, water heating loops, and closed hydronic circuits to protect piping and connected equipment from overpressure conditions. In commercial and industrial applications, it supports system safety, prevents mechanical failure, and maintains stable operation by controlling pressure fluctuations within regulated limits.
