What is the function of a pressure relief valve?

The function of a pressure relief valve is to release excess pressure from a system to prevent overpressure conditions. This is crucial for maintaining the safety and integrity of piping systems, especially those that operate under pressure. When a system generates pressure that exceeds the set limits, the pressure relief valve opens to allow the release of fluid, thereby reducing the pressure within the system. This action helps protect equipment and personnel from the dangers associated with overpressure, such as equipment damage, leaks, or even catastrophic failures.

Pressure relief valves are designed to act automatically and are usually set to open at a predetermined pressure. This allows them to respond quickly to any pressure spikes, ensuring that the system remains within safe operational limits. Therefore, they play an essential role in safety mechanisms across various applications in pressure piping systems.