What is the primary purpose of a pressure relief valve in a hydraulic system?

The primary purpose of a pressure relief valve in a hydraulic system is to prevent system overload and damage. This component is crucial as it acts as a safety mechanism that helps maintain the integrity of the hydraulic system. When the pressure within the system exceeds a predetermined level, the pressure relief valve opens, allowing excess fluid to escape. This action helps to avoid conditions that could lead to catastrophic failures, such as ruptures in hoses or fittings, or damage to pumps and actuators due to excessive pressure.

This function is vital for ensuring the longevity and safe operation of hydraulic systems in various applications, including industrial machines, vehicles, and other equipment that rely on hydraulic power. By regulating the pressure, the valve helps maintain safe operational limits, thereby safeguarding both the equipment and its users.