Bosch Rexroth | ZDR10DB2-5X75YMV12
ZDR10DB2-5X/75YMV/12
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The ZDR10DB2-5X/75YMV/12 pressure reducing valve belongs to the ZDR Pressure Reducing Valves series and is manufactured by Bosch Rexroth. It is intended to maintain a stable secondary pressure in hydraulic circuits. The valve is built in nominal size 10 for medium flow systems and is provided as a sandwich plate element so it can be stacked between subplates and directional valves. An ISO 4401-5 (D05) porting pattern defines the interface and allows quick interchange with other components using the same pattern. Pressure adjustment is made through a sleeve with a hexagon and a protective cap, enabling field setting while shielding the screw from contamination. The internal pilot oil supply draws fluid from the pressure line and routes it to the control spool, and pressure reduction occurs at port P1 with the pilot taken from port B. The design supports a maximum operating pressure of 315 bar on the primary side while holding the secondary side to 75 bar, so it can safeguard downstream actuators against overload.
During operation the valve accommodates flows up to 80 L/min without exceeding the specified stability range, and it tolerates 160 bar counter-pressure at port T to suit circuits with back-pressure return lines. An external leakage oil drain routes pilot and spool seepage back to tank, preventing pressure rise in the spring chamber. No check valve is incorporated, so reverse flow must be handled by separate components if required. The sealing elements are made from FKM to withstand high temperature and aggressive fluids, and all ports use SAE threads on the optional gauge connection for standardized instrumentation. The unit can be installed in any position, a feature that simplifies manifold layout. Hydraulic cleanliness should be maintained at ISO 4406 class 20/18/15 or better to avoid spool wear and sticking.
Technical Specifications
Adjustment Type
Sleeve With Hexagon And Protective Cap
Check Valve
None
Cleanliness Class
ISO 4406 20/18/15
Gauge Port Thread
SAE
Installation Position
Any
Leakage Oil Drain
External
Max Counter Pressure Port T
160 bar
Max Flow
80 L/min
Max Operating Pressure
315 bar
Max Secondary Pressure
75 bar
Mounting Type
Sandwich Plate
Nominal Size
10
Pilot Oil Supply
Internal
Porting Pattern
ISO 4401-5 (D05)
Pressure Reduction Port
P1 (Pilot From B)
Seal Material
FKM
1620 Old Apex Road
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