The Rexroth R900424203 DBDS20K18/400 is a high-performance, direct-operated pressure relief valve designed for reliable hydraulic system protection. As a cartridge-style valve, it is intended for insertion into control blocks, providing a compact and integrated solution. This valve precisely limits the pressure in a hydraulic system to a preset maximum of 400 bar, safeguarding components from overpressure conditions. Its robust construction and proven design ensure stable performance and a long service life, making it a trusted choice for various industrial and mobile hydraulic applications.