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The ZDR10DP2-5X/75YM/5 valve belongs to the ZDR Pressure Reducing Valves series and is manufactured by Bosch Rexroth for hydraulic circuits that require stable downstream pressure. It installs as a sandwich plate unit, and its ISO 4401-05-04-0-05 porting pattern aligns precisely with adjacent sub-plates. The nominal size 10 passages provide an appropriate flow area for medium-capacity machines. Pressure is reduced in channel P, and the spool symbol P2→P1 indicates the controlled flow direction from the inlet side to the secondary gallery. An internal pilot oil supply draws control oil directly from the high-pressure side, while an external pilot oil return routes it back to tank to avoid heat buildup. Leakage oil is also sent externally via port TA, keeping the stack clean. Secondary pressure can be adjusted up to 75 bar even when the inlet sees 315 bar, and a sleeve with a hexagon and cap lets maintenance staff set the spring force without dismantling the assembly.
During operation the valve passes up to 80 l/min, allowing it to serve multiple actuators fed from a common pump. It tolerates 160 bar counter pressure at the t-port, so backpressure in shared return lines does not disturb the regulated outlet. Four M6 screws specified as ISO 4762-10.9 clamp the module, holding seal faces flat under load and limiting plate deflection at maximum inlet pressure. A G1/4 pressure gauge port gives direct access for monitoring the reduced line, simplifying commissioning and troubleshooting. NBR seals withstand standard mineral hydraulic oils and minimize leakage over long duty cycles. These mechanical and hydraulic characteristics combine to keep actuator loads stable, reduce energy losses, and protect downstream components in automated machinery.
Adjustment Type
Sleeve With Hexagon And Cap
Leakage Oil Drain
External Via TA
Maximum Counter Pressure (t Port)
160 bar
Maximum Flow
80 l/min
Maximum Operating Pressure (input)
315 bar
Maximum Secondary Pressure
75 bar
Mounting Screws
4 × M6 (ISO 4762-10.9)
Mounting Type
Sandwich Plate
Nominal Size
10
Pilot Oil Return
External
Pilot Oil Supply
Internal
Porting Pattern
ISO 4401-05-04-0-05
Pressure Gauge Port
G1/4
Pressure Reduction Channel
P
Seal Material
NBR
Spool Symbol
P2→P1
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