Bosch Rexroth | 4WEH22HD7XOF6EW110N9ETS2K4B10
4WEH22HD7X/OF6EW110N9ETS2K4/B10
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The 4WEH22HD7X/OF6EW110N9ETS2K4/B10 directional spool valve is produced by Bosch Rexroth for the WEH Directional Spool Valves series and directs flow in hydraulic automation lines. Built in size NG25, it handles a maximum flow of 450 l/min, with ports P, A, and B rated to 280 bar and port T limited to 250 bar. A 4WE 6E high-power pilot control valve drives the main stage by internal pilot oil supply and return once pilot pressure exceeds 8 bar and up to 210 bar. The fitted HD spool secures the slide in hydraulic end positions, and discharge control coded S2 allows external adjustment of switching times. Horizontal mounting is mandatory, and a concealed manual override designated N9 lets technicians shift the valve mechanically when needed.
The solenoid coil draws 110 V AC at 50 or 60 Hz and connects through a K4 plug that follows DIN EN 175301-803. Flow paths conform to the ISO 4401-08-08-0-05 porting pattern so the valve seats directly on standard manifolds. System oil cleanliness must reach ISO 4406 class 20/18/15 to avoid spool scoring and leakage. These electrical, hydraulic, and contamination limits combine to ensure the valve maintains stable directional control under the highest rated flow and pressure in industrial power units.
Technical Specifications
Coil Voltage
110 V AC (50/60 Hz)
Electrical Connection
K4 (DIN EN 175301-803)
Fluid Cleanliness
ISO 4406 20/18/15
Installation Position
Horizontal Required
Manual Override
Concealed (N9)
Max Flow
450 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Operating Pressure (t)
250 bar
Max Pilot Pressure
210 bar
Min Pilot Pressure (hydraulic End Pos)
8 bar
Pilot Control Valve
4WE 6E (High-Power)
Pilot Oil
Internal Supply And Return (ET)
Porting Pattern
ISO 4401-08-08-0-05
Size
NG25
Spool Type
HD (Hydraulic End Position)
Switching Time Adjustment
Discharge Control (S2)
1620 Old Apex Road
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