Bosch Rexroth | 4WEH22D7X6EW110N9DAL
4WEH22D7X/6EW110N9DAL
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The 4WEH22D7X/6EW110N9DAL valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth for routing pressurized fluid in automated hydraulic systems. It is built in nominal size 22 (NG25) and fits the ISO 4401-08-08-0-05 porting pattern, so it installs directly on standardized subplate connections. A concealed manual override identified as N9 enables local shifting when electrical power is unavailable. The valve accommodates a maximum flow of 450 l/min with symbol D performance and tolerates up to 280 bar on ports P, A, and B. Required fluid cleanliness is ISO 4406 20/18/15 to protect internal metering edges. Unit mass with one solenoid equals 11.5 kg, allowing manageable handling during assembly.
Pilot operation is provided by a 4WE 6E high-power valve, and its coil accepts 110 V AC at 50 or 60 Hz for straightforward integration with plant power supplies. The pilot stage can receive up to 210 bar, while external port T withstands 250 bar during discharge. For two-spool versions with spring return, actuation begins once pilot pressure reaches 11 bar. The design achieves a mean time to dangerous failure of 100 years, supporting long-term service in safety-related circuits.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Manual Override
Concealed (N9)
Max Flow (symbol D, W.h 22)
450 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
210 bar
Max Pressure Port T (y External)
250 bar
Min Pilot Pressure (2-spool, Spring End)
11 bar
Mounting Type
Subplate
Mttfd
100 years
Nominal Size
22 (NG25)
Pilot Control Valve
4WE 6E (High-Power)
Pilot Valve Coil Voltage
110 V AC (50/60 Hz)
Porting Pattern
ISO 4401-08-08-0-05
Weight (one Solenoid)
11.5 kg
1620 Old Apex Road
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