***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth DB 20-2-5X/200XY SO590 (R900525128) is a sophisticated pilot-operated pressure relief valve designed to regulate operating pressure in hydraulic systems. This valve is integral for maintaining the desired performance by limiting the system's pressure to a predetermined level. It comprises a main valve with a spool insert and a pilot control valve that includes a pressure adjustment element. The operation of this valve relies on the hydraulic pressure in channel P, which influences both the main spool and the pilot control valve. When the set pressure value is exceeded, the ball within the pilot control opens, allowing fluid to flow from channel P through various control lines and nozzles, leading to tank return either internally or externally depending on the model type. This action ensures that excess hydraulic fluid is diverted, thus maintaining stable system pressure. Additionally, this Rexroth pressure relief valve offers versatility through its unloading capability and option to switch to an alternative second pressure rating via port X. Designed for subplate mounting, it adheres to ISO porting patterns for NG6, NG10, and NG16 sizes and can also be used as a screw-in cartridge valve for threaded connections. Users have several adjustment types available for setting the desired pressure: these include a rotary knob, sleeve with hexagon and protective cap, lockable rotary knob with scale, or rotary knob with scale. The unit is also engineered with corrosion protection features ensuring durability in challenging environments. This combination of precision engineering and flexible configuration options makes Bosch Rexroth's DB 20-2-5X/200XY SO590 an essential component for controlling operating pressures in advanced hydraulic applications.