Bosch Rexroth | ZDR6DP3-4X150YM12
ZDR6DP3-4X/150YM/12
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The ZDR6DP3-4X/150YM/12 valve is manufactured by Bosch Rexroth for the ZDR Pressure Reducing Valves series and serves to stabilize downstream pressure in hydraulic automation circuits. As a direct-operated pressure reducing device, it attaches through an ISO 4401-03-02-0-05 interface and aligns with NFPA D03 manifolds, so it fits common size 6 stacking patterns. Downstream pressure is moderated in port P, while pilot oil is supplied internally and drained externally to keep the controlled line clean. A lockable rotary knob with a scale lets maintenance staff set and record the desired pressure without accidental change. The design omits a check valve, so any reverse flow must be handled by external components.
The unit accepts a primary inlet of up to 350 bar and holds the secondary side to 150 bar, maintaining stable pressure for sensitive actuators even when counter pressure reaches 160 bar on the return line. A flow rating of 50 l/min supports medium-sized cylinders and clamp circuits. Compatibility with HL, HLP, HLPD, HVLP, HVLPD, and HFC fluids allows use with standard mineral oils or fire-resistant water-glycol blends. It can be installed in any orientation to simplify manifold layout, and NBR seals retain media while resisting wear. The assembly weighs 1.540 kg, making manual installation straightforward during maintenance or retrofit work.
Technical Specifications
Adjustment Type
Lockable Rotary Knob (Scale)
Check Valve
None
Hydraulic Fluids
HL, HLP, HLPD, HVLP, HVLPD, HFC
Installation Position
Any
Max Counter Pressure (t(y))
160 bar
Max Flow
50 l/min
Max Primary Pressure (p)
350 bar
Max Secondary Pressure
150 bar
Mounting Interface
ISO 4401-03-02-0-05
Nfpa Size
D03
Nominal Size
6
Pilot Oil
Internal Supply, External Drain
Pressure Reduction Port
P
Seal Material
NBR
Valve Type
Pressure Reducing, Direct Operated
Weight
1.540 kg
1620 Old Apex Road
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