Servo Valve For External Electronics (Rexroth - BOSCH). - 20 L/min , Valve Pressure Differential = 70 bar. - ET - Internal Supply , Internal Drain. - Two Stage , Type 4WS2E. - Nominal Size 10. - Connection Location to ISO 4401. - Code : 4401-05-0-094.

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Servo Valve For External Electronics (Rexroth - BOSCH). - 20 L/min , Valve Pressure Differential = 70 bar. - ET - Internal Supply , Internal Drain. - Two Stage , Type 4WS2E. - Nominal Size 10. - Connection Location to ISO 4401. - Code : 4401-05-0-094.
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4WS2EM_10-5X-20B11E_
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Modified on: August 22,2026  
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Specifications
Supplier part number: 4WS2EM_10-5X-20B11E_
Name:Servo Valve For External Electronics (Rexroth - BOSCH). - 20 L/min , Valve Pressure Differential = 70 bar. - ET - Internal Supply , Internal Drain. - Two Stage , Type 4WS2E. - Nominal Size 10. - Connection Location to ISO 4401. - Code : 4401-05-0-094.
Description:The search results confirm that the Rexroth 4WS2E is a two-stage directional servo valve designed for external electronics, with the 20 L/min and ET (internal supply, internal drain) pilot oil configuration being a standard option for the NG10 size . Parameter Specification Source(s) Model Series 4WS2E - Two-stage directional servo valve for external electronics Nominal Size 10 (NG10 / CETOP 5) Nominal Flow (at 70 bar Δp) 20 L/min (±10% tolerance) Max. Operating Pressure 315 bar Pilot Oil Supply/Drain ET - Internal supply, internal drain (standard) Porting Pattern ISO 4401-05-05-0-05 Feedback Type Mechanical First Stage Type Nozzle/flapper plate amplifier 🔧 Ordering Code Breakdown Your specifications translate into the following Rexroth ordering code structure, which is detailed in the manufacturer's datasheets for the 4WS.2E series : 4WS2E: Electrically operated 2-stage servo valve for external control electronics 10: Nominal size 10 5X: Component series 50 to 59 (installation dimensions unchanged) 20: Nominal flow: 20 L/min at 70 bar valve pressure differential (applies a ±10% tolerance) B: Valve version code (e.g., spool overlap) 11: Coil number for external electronics (30 mA / 85 Ω per coil) ET: Pilot oil supply: internal supply, internal drain (the standard configuration) 315: Inlet pressure range to 1st stage: 10 to 315 bar K31: Electrical connection code (without plug-in connector, with component plug)
    
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