What is the role of the pressure relief valves?

The role of pressure relief valves is crucial in maintaining the safety and integrity of various systems within the aircraft. These valves are designed to open automatically when the pressure within a system exceeds a predetermined limit. This prevents potential damage or failure due to overpressure conditions. By relieving excess pressure, the valves protect components and systems from damage that could otherwise arise from excessive forces, thus ensuring that the system operates within safe limits. This function is vital for maintaining both safety and functionality, making the choice focused on limitation exceedance the correct understanding of their role in aircraft systems.