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R900445958 ZDR6DA2-4X/150YM Rexroth pressure reducing valve made in Germany
R900445958 ZDR6DA2-4X/150YM Rexroth pressure reducing valve made in Germany
Specifications
Supply Ability :
100
Certification :
ISO
Model :
ZDR6DA2-4X/150YM
Place of Origin :
Germany
Delivery Time :
2 weeks
Model Number :
R900445958 ZDR6DA2-4X/150YM
Packaging Details :
wooden box
Adjustment Type :
DA2 = Rotary hand knob with protective cap (hand-adjustable, no tool)
Max. Adjustable Reduced Pressure :
150 bar (adjustment range typically 4–150 bar)
Brand Name :
Rexroth
Payment Terms :
Western Union,T/T,D/P,D/A,L/C
Part Number :
R900445958
MOQ :
1
Component Series :
4X (series 40–49, dimensionally interchangeable)
Description
R900445958 ZDR6DA2-4X/150YM Rexroth Pressure Reducing Valve
Product Specifications
Parameter Value
Part Number R900445958
Model ZDR 6 - DA2 - 4X / 150YM
Valve Type Direct-acting, 3-way pressure reducing valve (sandwich / stackable)
Nominal Size (NG) 6 - sandwich mounting per ISO 5781 / NG6 (DIN 24340 Form E)
Function Reduces pressure in secondary circuit to set value; 3-way action (excess pressure dumped via external drain)
Adjustment Type DA2 = Rotary hand knob with protective cap (hand-adjustable, no tool)
Component Series 4X (series 40-49, dimensionally interchangeable)
Max. Adjustable Reduced Pressure 150 bar (adjustment range typically 4-150 bar)
Max. Operating Pressure (Primary P-port) 315 bar
Max. Operating Pressure (Secondary A/B port) 315 bar
Max. Flow Rate (Qmax) approx. 60 L/min (Size 6 ZDR)
Pilot Oil Drain Y = External pilot drain (separate Y-port to tank)
Seal Material M = FKM (Viton) - specified by "M" suffix in type code / ordering data
Hydraulic Fluid Mineral oil HL, HLP; HEES, HETG (bio-oils); HFC (with NBR - FKM also acceptable for HFC short-term); NOT for HFD(R) without special confirmation
Fluid Temperature Range -20 °C to +90 °C (FKM seals - wider than NBR)
Viscosity Range 10-800 mm²/s
Weight (approx.) 1.7 kg
Body Material Steel / cast iron, zinc-plated
R900445958 ZDR6DA2-4X/150YM Rexroth pressure reducing valve made in Germany
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Frequently Asked Questions
Q1: Is ZDR a relief valve?
No. A relief valve (DB/DBD) limits upstream/system pressure; a pressure reducing valve (ZDR) maintains a lower, constant pressure in a downstream (secondary) circuit. If primary (inlet) pressure drops below the set reduced pressure, the ZDR opens fully and passes flow unregulated.
Q2: What does "DA2 /150YM" mean?
  • DA2 = NG6 sandwich, rotary hand knob with cap (hand-adjustable)
  • /150 = spring stage, max. adjustable reduced pressure = 150 bar (low-pressure stage; other stages: /75, /210, /315)
  • Y = external pilot drain - pilot oil returns via separate Y-port to tank
  • M = FKM (Viton) seal material
Q3: How do I adjust the reduced pressure?
With the secondary circuit under flow, lift/remove the cap and turn the rotary knob clockwise to increase, counterclockwise to decrease. Verify with a pressure gauge at the secondary port - the knob has no calibrated scale. Factory preset is typically near minimum.
Q4: How is the valve mounted?
As a sandwich (stackable) valve between a directional control valve and the NG6 subplate. Uses NG6 DIN 24340 Form E / ISO 5781 bolt pattern. Sandwich port IDs: P = primary (high pressure from pump), A (or B) = reduced secondary pressure to actuator, T = tank return, Y = external pilot drain to tank (must be connected!).
Q5: Why use the "Y" (external drain) version?
If the T-line in the valve stack has >2-3 bar backpressure, an internally drained ZDR's set pressure will increase by the amount of T-backpressure. The Y-version isolates the pilot from T, keeping the set reduced pressure stable. Always plumb Y separately to tank if T-backpressure exists.
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R900445958 ZDR6DA2-4X/150YM Rexroth pressure reducing valve made in Germany

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Product Detail
Supply Ability :
100
Certification :
ISO
Model :
ZDR6DA2-4X/150YM
Place of Origin :
Germany
Delivery Time :
2 weeks
Model Number :
R900445958 ZDR6DA2-4X/150YM
Contact Supplier
R900445958 ZDR6DA2-4X/150YM Rexroth pressure reducing valve made in Germany

Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.

Verified Supplier
2 Years
fujian
Business Type :
Manufacturer, Exporter
Main Products :
Gear Pump, Rexroth Hydraulic Pump, Parker Denison Hydraulic Pump
Total Annual :
1 million-10 millon
Employee Number :
>50
Certification Level :
Verified Supplier
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