The Bosch Rexroth R900906285 DBW10B2-5X/315-6EG24N9K4 is a high-performance, pilot-operated pressure relief valve designed for subplate mounting. It serves two primary functions in a hydraulic system: limiting the system pressure to a set maximum and providing solenoid-actuated unloading of the pressure circuit. When the solenoid is de-energized, the main valve acts as a standard pressure relief valve. When the 24V DC solenoid is energized, it unloads the flow from port P to port T at a minimal pressure, making it ideal for applications requiring pressure-free pump start-up or intermittent pressure control. This valve is built for reliability and precise control, adhering to the ISO 6264 porting pattern for easy integration.