Bosch Rexroth | ZDR10DB2-5X75YM12
ZDR10DB2-5X/75YM/12
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The ZDR10DB2-5X/75YM/12 valve is produced by Bosch Rexroth and belongs to the ZDR Pressure Reducing Valves series, where it serves to keep hydraulic actuators supplied with a controlled pressure level. Its nominal size is 10, matching circuits that require medium flow capacity. The unit mounts as a sandwich plate and conforms to the ISO 4401-05-04-0-05 interface so it can be stacked beneath directional valves without extra hardware. Pressure is reduced in port P while the pilot signal is taken from channel B, creating an internal control loop. Pilot oil is supplied internally, and the return is routed externally through port TA to isolate the pilot stage from tank line fluctuations. The inlet side can withstand 315 bar, and the secondary side is limited to 75 bar, protecting downstream components. Pressure adjustment is performed with a sleeve that has a hex head and a protective cap, allowing precise setting while shielding the mechanism from dirt.
The valve passes up to 80 L/min, fitting pumps with moderate delivery rates. Counter pressure at the tank port may reach 160 bar without affecting regulation accuracy. There is no built-in check valve, so reverse flow must be managed by separate devices. A G1/4 gauge port lets technicians read the secondary pressure directly during commissioning or service. The device can be installed in any orientation, giving designers freedom when arranging manifold blocks. Hydraulic fluid cleanliness must meet ISO 4406 class 20/18/15 to maintain reliability, and all dynamic joints are sealed with NBR materials for compatibility with common mineral oils.
Technical Specifications
Adjustment Type
Sleeve With Hex And Protective Cap
Check Valve
Without
Fluid Cleanliness
ISO 4406 20/18/15
Gauge Port
G1/4
Installation Position
Any
Max Counter Pressure (t)
160 bar
Max Flow
80 l/min
Max Inlet Pressure
315 bar
Max Secondary Pressure
75 bar
Mounting Interface
ISO 4401-05-04-0-05
Mounting Type
Sandwich Plate
Nominal Size
10
Pilot Oil Return
External (TA)
Pilot Oil Supply
Internal
Pressure Reduction Port
P (pilot from B)
Seal Material
NBR
1620 Old Apex Road
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