Bosch Rexroth | 4WRZE25W6-220-7X6EG24ETK31A1D3M
4WRZE25W6-220-7X/6EG24ETK31/A1D3M
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The 4WRZE25W6-220-7X/6EG24ETK31/A1D3M proportional directional valve belongs to the WRZ Proportional Directional Valves series from Bosch Rexroth and is applied to regulate flow and direction in hydraulic automation systems. It provides a nominal flow of 220 l/min at a 10 bar differential, while the main stage tolerates operating pressures up to 350 bar. Control electronics accept a ±10 V command signal and run from a 24 V DC supply; at maximum stroke the solenoid draws 2.5 A. Pilot oil supply and drain are both internal in the ET configuration, so no external pilot lines are required. Installation uses the ISO 4401-08-07-0-94 porting pattern, ensuring interchangeability with standard subplates.
System feedback remains consistent because hysteresis is limited to 6 percent. The coil insulation endures temperatures up to 150 °C, supporting continuous duty in hot manifolds. A return line pressure of 30 bar is permitted when the t port is internally routed. Pilot pressure stability is maintained by an onboard pressure reducing valve designated ZDR 6 DP0-4X/40YM-W80. The enclosure meets IP65, protecting the electronics from dust and low-pressure water jets. Compatible operating media include HL and HLP oils specified in DIN 51524, and all dynamic seals are supplied in NBR material. Mounted on its subplate, the assembly weighs 18.4 kg.
Technical Specifications
Command Signal
±10 V (A1)
Hydraulic Fluid
HL/HLP (DIN 51524)
Hysteresis
≤ 6%
Max Coil Temperature
150 °C
Max Operating Pressure (main)
350 bar
Max Return Pressure (t, Internal)
30 bar
Max Solenoid Current
2.5 A
Nominal Flow (Δp=10 Bar)
220 l/min
Pilot Oil Drain
Internal (ET)
Pilot Oil Supply
Internal (ET)
Porting Pattern
ISO 4401-08-07-0-94
Pressure Reducing Valve
ZDR 6 DP0-4X/40YM-W80
Protection Class
IP65
Seal Material
NBR (M)
Supply Voltage
24 V DC
Weight (subplate)
18.4 kg
1620 Old Apex Road
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