Bosch Rexroth | ZDR6DP2-4X25YMV12
ZDR6DP2-4X/25YMV/12
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The ZDR6DP2-4X/25YMV/12 valve is manufactured by Bosch Rexroth as part of the ZDR Pressure Reducing Valves series and is used in hydraulic automation to maintain a controlled secondary pressure while allowing flow from the main line. This direct-operated unit mounts as a sandwich plate in CETOP D03 manifolds, and its porting pattern follows ISO 4401-03-02-0-05 to fit standard subplates. An internal pilot oil supply feeds the control stage, while pilot oil returns externally so back pressure does not influence regulation. The valve is built to nominal size 6, and flow travels along the P2 to P1 path toward the regulated circuit. Maximum operating pressure on the inlet side is 350 bar, allowing connection to high-pressure pumps without overstressing components.
Secondary pressure is limited to 25 bar to protect downstream actuators, and the setting is adjusted by a sleeve with a hexagon head that sits under a protective cap for tamper resistance. The design handles a maximum flow of 50 l/min, and counter pressure at port T may reach 160 bar without disturbing performance. Sealing elements are made from FKM to tolerate aggressive fluids and higher temperatures. Pressure reduction acts in channel P, so the branch line remains at the preset value while the main line stays at full pressure. These characteristics form a compact solution for precise pressure control in stacked directional valve assemblies.
Technical Specifications
Adjustment Type
Sleeve With Hexagon And Protective Cap
Cetop Size
D03
Flow Path Symbol
P2→P1
Max Counter Pressure At 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 Channel
P
Seal Material
FKM
Secondary Pressure Rating
25 bar
Valve Type
Direct Operated
1620 Old Apex Road
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