Bosch Rexroth ZDR-6-DA2-45 25YM Pressure Reducing Valve

Bosch Rexroth ZDR6DA2-4X/25YM is a direct-operated pressure reducing valve from the ZDR 6 family, designed to be installed as part of a Rexroth valve stack to regulate downstream pressure in industrial hydraulic circuits. This model serves as the ZDR6DA2-4X/25YM intermediate plate within modular assemblies, with variants such as ZDR6DA2-4X/25YM/12 that reflect different mounting patterns and circuit configurations. The intermediate-plate part number is R900448079, a common reference when sourcing Rexroth components for stack installations. The valve supports a secondary pressure up to 25 bar (362 psi), enabling stable, preset pressure in downstream lines even as upstream pressure or flow varies. As a size 6, direct-operated regulator, it is well suited to medium-pressure hydraulic applications where reliable pressure control is critical, including actuator circuits, clamping, and automation lines, particularly when integrated with surrounding Rexroth components to establish a defined downstream pressure. Because it is a plate in a stack, the final preset downstream pressure depends on the surrounding valve configuration and calibration performed during installation.