ZDR10DA1-5X/75Y

The ZDR10DA1-5X/75Y pressure reducing valve belongs to the ZDR Pressure Reducing Valves series from Bosch Rexroth and is applied in hydraulic automation to maintain a stable reduced pressure downstream of a high-pressure supply. Adjustment is made through a rotary knob so the operator can quickly set the desired secondary pressure without tools. The valve's nominal size 10 defines its interface dimensions and flow passage cross-section. A sandwich plate mounting format lets the unit be stacked between subplates in modular manifolds. The ISO 4401-05-04-0-05 porting pattern matches common CETOP 5 layouts, streamlining installation with other directional or flow control elements. An integrated check valve in Version A permits free reverse flow, preventing pressure buildup when flow direction changes. The secondary pressure rating of 75 bar limits the controlled pressure delivered to downstream actuators. Pressure reduction occurs at port A, directing conditioned fluid to the working circuit. A maximum flow capacity of 80 l/min supports medium-size actuators and maintains response speed under dynamic demand.

The inlet side tolerates a maximum operating pressure of 315 bar, allowing the valve to connect to high-pressure pump lines without risk of structural overload. Internal pilot oil supply with external return maintains regulation while discharging pilot flow separately for cooler operation. The external pilot oil leaves through drain port TA, ensuring any leakage does not mix with the main line. Port T can accept counterpressure up to 160 bar, so the valve remains stable even when the tank line is pressurized. A G1/4 pressure gauge port provides a point to monitor the reduced pressure during setup and maintenance. NBR seals are used to contain fluid and resist wear in mineral or synthetic oil environments. Approved operating media include HL, HLP, HLPD, HVLP, HVLPD, and HFC fluids, giving flexibility for conventional and fire-resistant hydraulic systems. The assembly weighs 2.6 kg, which allows manual handling during service or manifold reconfiguration. The construction therefore supports reliable pressure control in compact hydraulic stacks.