Bosch Rexroth | 4WEH22J7X6EW110N9ES2K4B10D3V
4WEH22J7X/6EW110N9ES2K4/B10D3V
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The 4WEH22J7X/6EW110N9ES2K4/B10D3V valve is manufactured by Bosch Rexroth for the WEH Directional Spool Valves series and directs hydraulic flow in automated machinery. It uses electro-hydraulic actuation to shift a 4-way spool that handles the NG25 flow class. The porting pattern matches ISO 4401-08-08-0-05, allowing direct mounting on standard subplates. Pilot oil is taken internally, designated by code E, while the return oil leaves through an external Y port to prevent pilot backpressure. Spool movement is driven by a high-power 4WE 6E pilot valve, and command signals reach the solenoids through a DIN EN 175301-803 plug coded K4. A concealed manual override labeled N9 permits local actuation during commissioning or troubleshooting.
The pilot stage functions between a minimum pressure of 10.5 bar for spring-centered operation and a maximum of 210 bar to protect internal components. Working ports P, A, and B tolerate 280 bar, whereas the tank port T is limited to 250 bar to safeguard return circuits. A D3 pressure-reducing valve in the pilot supply caps secondary pressure at 45 bar, ensuring stable spool control. Flow to the pilot passages is metered by a 1.0 mm throttle insert marked B10, which damps pressure spikes and refines response characteristics. These pressure limits and control features allow the valve to maintain consistent performance across varying load and flow conditions.
Technical Specifications
Actuation Type
Electro-Hydraulic
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Pilot Pressure
210 bar
Max Pressure (port T)
250 bar
Max Pressure (ports P/a/b)
280 bar
Min Pilot Pressure (3-pos Spring)
10.5 bar
Nominal Size
NG25
Pilot Control Valve
4WE 6E (High-Power)
Pilot Oil Return
External (Y)
Pilot Oil Supply
Internal (E)
Porting Pattern
ISO 4401-08-08-0-05
Pressure Reducing Valve
D3
Reducing Valve Secondary Pressure
45 bar
Throttle Insert
Ø 1.0 mm (B10)
Way Configuration
4-way
1620 Old Apex Road
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