A pressure relief hydraulic cartridge valve is a specific type of pressure relief valve that is designed to be compact and easily inserted into a hydraulic system, typically through a manifold or standalone cartridge body. Its function remains the same as other pressure relief valves: to set a maximum pressure limit within the circuit and prevent overloading. These cartridge valves are convenient because they can be quickly installed or replaced without needing to disassemble the entire hydraulic system. They play a crucial role in safeguarding the system from damage by releasing excess pressure when necessary, ensuring smooth and safe operation of hydraulic machinery.