Bosch Rexroth | ZDR10VA4-3X100Y
ZDR10VA4-3X/100Y
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The ZDR10VA4-3X/100Y pressure reducing valve belongs to the ZDR Pressure Reducing Valves series and is manufactured by Bosch Rexroth for closed-loop hydraulic circuits that need stable secondary pressure. It is configured for NG10 mounting and sits in a sandwich plate stack that follows the ISO 4401-05-04-0-05 porting pattern, which simplifies manifold integration. Secondary pressure is limited to 100 bar at the reduction path from A2 → A1, while the main channel tolerates up to 315 bar. The desired setting is applied with a rotary knob so maintenance personnel can fine-tune the level while the machine is running. Internal pilot oil sourcing with an external return path prevents influence from load variations, and a dedicated G1/8 pressure gauge port allows direct monitoring of the regulated outlet.
The valve permits flow rates up to 100 L/min and sustains counter-pressures on ports ta/tb up to 160 bar, so it remains stable in high-throughput power units. A built-in check valve maintains free reverse flow to protect upstream actuators during pressure drops. The body weighs 2.420 kg, allowing manual handling during service, and sealing is carried out with NBR to support long life on aggressive media. Approved fluids include HL, HLP, HLPD, HVLP, HVLPD, and water-glycol HFC groups, giving the unit flexibility in general industrial and mobile equipment. Pilot oil exits through port TA, keeping the control chamber unloaded and preventing drift of the reduced pressure setting. These characteristics position the ZDR10VA4-3X/100Y as a straightforward component for maintaining consistent pressure in tooling, press, and test bench loops.
Technical Specifications
Adjustment Type
Rotary Knob
Check Valve
Yes
Hydraulic Fluids
HL, HLP, HLPD, HVLP, HVLPD, HFC
Mass
2.420 kg
Max Counter Pressure (ta/tb)
160 bar
Max Flow
100 l/min
Max Operating Pressure
315 bar
Mounting Type
Sandwich Plate
Nominal Size
NG10
Pilot Oil
Internal Supply, External Return
Pilot Oil Return Port
TA
Porting Pattern
ISO 4401-05-04-0-05
Pressure Gauge Port
G1/8
Pressure Reduction Port
A2→A1
Seal Material
NBR
Secondary Pressure Max
100 bar
1620 Old Apex Road
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