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The ZDR10DP2-5X/75YM/12 pressure reducing valve belongs to the ZDR Pressure Reducing Valves series from Bosch Rexroth. It is used in hydraulic automation circuits to maintain a controlled downstream pressure when high inlet pressures are present. The valve is direct operated, allowing fast response without a pilot stage, and it is built in nominal size 10 to fit standard subplates. At the inlet it withstands up to 315 bar, while the secondary side is limited to 75 bar to protect sensitive actuators. Pressure regulation occurs in port P, channeling the reduced flow toward the downstream system. Adjustment is made through a sleeve with a hex head that is protected by a cap, permitting on-site setting changes while guarding against accidental movement. The sandwich plate mounting style lets the unit stack between other ISO subplates, simplifying manifold assembly without separate line connections.
The valve handles flows up to 80 l/min without losing regulation accuracy and tolerates 160 bar counter-pressure at port T, so return line surges do not disturb control. Internal pilot oil supply simplifies plumbing, whereas the pilot oil is returned externally to prevent heat build-up inside the housing. Sealing is achieved with NBR elastomers suited for common mineral oils, and the design omits an integrated check valve, leaving reverse flow management to external components. Fluid cleanliness must meet ISO 4406 class 20/18/15 to preserve the precision edges of the control spool. Installation aligns with the ISO 4401-05-04-0-05 mounting pattern, enabling interchange with other size-10 sandwich valves in the same stack.
Adjustment Type
Sleeve With Hex And Protective Cap
Check Valve
None
Cleanliness Class
ISO 4406 20/18/15
Max Counter Pressure (port T)
160 bar
Max Flow
80 l/min
Max Operating Pressure (inlet)
315 bar
Max Secondary Pressure
75 bar
Mounting Pattern
ISO 4401-05-04-0-05
Mounting Style
Sandwich Plate
Nominal Size
10
Operation
Direct Operated
Pilot Oil Return
External
Pilot Oil Supply
Internal
Pressure Reduction Port
P
Seal Material
NBR
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