Bosch Rexroth ZDR10DA2-54 25Y Pressure Reducing Regulating Valve

Bosch Rexroth ZDR10DA2-54 25Y is a direct-operated pressure reducing valve from the ZDR10 family, designed for sandwich-plate mounting (NG10) to regulate downstream pressure in hydraulic circuits. By maintaining a preset secondary pressure as main circuit pressure fluctuates, it protects actuators and stabilizes performance in machines and automated lines. The valve supports a compact, sub-plate configuration and uses an internal pilot oil supply with external pilot oil return (the "Y" suffix describes this pilot arrangement), enabling reliable actuation within compact manifolds. Variants in the ZDR10DA2 line are offered with different downstream setpoints (including 150Y and 210Y examples), allowing selection to match system requirements; Rexroth catalog entries emphasize direct-operation and precise pressure control for hydraulic networks up to several hundred bars of inlet pressure. In practice, it serves to cap the downstream pressure and ensure consistent actuator performance, which is especially critical in tooling machines, clamping circuits, and other hydraulic subsystems where predictable response is essential. This model designation identifies its size and position within Rexroth's line of ZDR10DA2 direct-operated regulators, with compatible seals, plates, and replacement parts available through Rexroth distributors.