Pressure relief valves should not be installed in what configuration?

Pressure relief valves are designed to prevent pressure build-up in systems by venting excess pressure. When valves are installed in series, they do not function independently. If the first valve in the series fails to open due to a mechanical issue or miscalibration, the second valve may also be affected because it has to rely on the first valve's operation to relieve pressure. This configuration can create a dangerous situation where neither valve operates effectively, leading to unsafe pressure levels in the system.

By ensuring pressure relief valves are installed in parallel or on the same plane, each valve can independently activate in response to pressure changes, thus maintaining system safety. Additionally, positioning them close to the compressor is often beneficial for responding quickly to pressure surges caused by compressor operation. Ensuring individual performance through proper installation is essential for system reliability and safety.