In hydraulic systems, what role does a pressure relief valve play?

A pressure relief valve serves a critical function in hydraulic systems by protecting them from overpressure situations. When the pressure in the system exceeds a predetermined limit, the pressure relief valve opens, allowing fluid to escape from the system. This prevents potential damage to components, reduces the risk of leaks, and enhances the safety and reliability of the system.

By automatically venting excess pressure, the relief valve ensures that the system operates within safe pressure limits. This function is vital because excessive pressure can lead to catastrophic failures, such as ruptures or burst hoses, which could harm equipment or personnel. Thus, the role of the pressure relief valve is essential for maintaining the integrity and safety of hydraulic systems.