What is the primary function of pressure control valves in a hydraulic system?

The primary function of pressure control valves in a hydraulic system is to set and maintain a maximum system pressure, ensuring that the pressure does not exceed predetermined levels. This is crucial for protecting components within the hydraulic system from damage due to overpressure, which can lead to failures or malfunctions.

By regulating the pressure, these valves help in achieving consistent performance of hydraulic actuators and other components, contributing to the overall efficiency and reliability of the system. This functionality ensures that, during varying operational conditions, the system operates safely within specified limits.

While other functions like maintaining a constant flow rate, increasing fluid temperature, or isolating components are relevant to hydraulic systems, they are not the primary purpose of pressure control valves. The emphasis on setting maximum system pressure distinguishes their role, making them critical for safety and performance in hydraulic applications.