What is the primary function of a pressure relief valve?

The primary function of a pressure relief valve is to release vapor pressure to maintain a safe maximum working pressure within a system. This is crucial for preventing overpressure scenarios that could lead to equipment failure, leaks, or dangerous conditions.

When the internal pressure of a gas system exceeds the designated maximum safe level, the pressure relief valve automatically opens to allow gas to escape. This action decreases the pressure within the system, ensuring it remains within safe operating limits. It plays a vital role in safeguarding both the equipment and personnel from the risks associated with excessive pressure, such as explosions or ruptures.

Understanding this function highlights the importance of proper maintenance and monitoring of pressure relief valves in any gas system. It is essential to ensure they are operational to prevent hazardous situations from arising due to uncontrolled pressure buildup.