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The ZDR6DP2-4X/250YMV/60 pressure reducing valve belongs to the ZDR Pressure Reducing Valves series and is manufactured by Bosch Rexroth for hydraulic circuits that require controlled secondary pressure. Its nominal size 6 defines the flow passage dimensions for compact manifolds, while sandwich plate mounting lets the unit fit between standardized subplates without extra piping. The porting pattern ISO 4401-03-02-0-05 aligns the valve with common CETOP 03 surfaces for quick interchangeability. A sleeve with a hexagon protective cap provides a tamper-resistant means of adjusting the reduced pressure. The body tolerates a maximum operating pressure of 350 bar, and reduction takes place at port P to stabilize the main supply line. Internal pilot oil supply eliminates external pilot plumbing, and external pilot return sends pilot flow directly to tank to avoid interaction with system pressure. The design regulates up to 50 l/min so branch circuits receive steady flow without excessive pressure drop.
Additional construction details support reliable service. Leakage oil is drained externally to port T(Y), preventing case pressure rise during continuous operation, and back pressure on that port may reach 160 bar without impairing function. FKM seals resist higher temperatures and aggressive media found in modern hydraulic fluids. The valve includes no check valve, so reverse flow must be managed through circuit design. A weight of 1.2 kg allows easy handling during manifold assembly. Hydraulic cleanliness must reach ISO 4406 code 20/18/15 to protect the pilot orifices from contamination. A locating hole identified by the /60 suffix aids precise positioning on the mounting face, ensuring ports align accurately with adjacent blocks.
Adjustment Type
Sleeve With Hexagon (Protective Cap)
Check Valve
None
Cleanliness Class
ISO 4406 20/18/15
Leakage Oil Drain
External To T(Y)
Locating Hole
With (/60)
Max Back Pressure (t(y))
160 bar
Max Flow
50 l/min
Max Operating Pressure
350 bar
Mounting Type
Sandwich Plate
Nominal Size
6
Pilot Oil Return
External
Pilot Oil Supply
Internal
Porting Pattern
ISO 4401-03-02-0-05
Pressure Reduction Port
P
Seal Material
FKM
Weight
1.2 kg
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