Bosch Rexroth | 4WEH22G7X6EW110N9DAB12
4WEH22G7X/6EW110N9DA/B12
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The 4WEH22G7X/6EW110N9DA/B12 valve belongs to the WEH Directional Spool Valves series and is produced by Bosch Rexroth. It directs hydraulic flow in automated machinery and is configured as a 4-way unit so it can connect pressure, tank, and two work ports during switching. The housing is built in size NG25 and follows the ISO 4401-08-08-0-05 porting pattern, allowing direct mounting on standard subplates. Electro-hydraulic actuation transmits pilot energy to the spool, reducing the force demanded from the electrical solenoids. In the main ports P, A, and B the assembly withstands up to 280 bar, while port T is limited to 250 bar. When symbol G is operated at 70 bar the valve can pass a maximum flow of 400 l/min, provided the hydraulic fluid stays within cleanliness class ISO 4406 20/18/15. A throttle insert with a 1.2 mm bore can be fitted to stabilize pilot pressure spikes.
Pilot control is handled by the integrated high-power 6E stage, which supplies the force required to shift the main spool quickly. To achieve the shortest switching time the pilot circuit must deliver 35 l/min. The pilot oil is supplied externally through port X, and it returns externally through port Y, so system designers can keep pilot flow isolated from the work circuit. Pilot pressure may rise to 210 bar without overstressing components, yet a spring-centered version needs at least 10.5 bar to initiate movement. Port Y tolerates back pressure up to 160 bar before discharge lines must be upgraded. With two solenoids and the centering spring installed the assembly weighs 11.9 kg, accommodating straightforward handling during manifold installation.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Max Flow (symbol G, 70 Bar)
400 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
210 bar
Max Pressure (port T)
250 bar
Min Pilot Pressure (spring-centered)
10.5 bar
Pilot Control Valve
High-Power (6E)
Pilot Flow For Shortest Switching Time
35 l/min
Pilot Oil Supply
External (X), External Return (Y)
Pilot Return Port Y Max Pressure (ac)
160 bar
Porting Pattern
ISO 4401-08-08-0-05
Size
NG25
Throttle Insert
Ø1.2 mm
Type Of Actuation
Electro-Hydraulic
Way Configuration
4-Way
Weight (2 Solenoids, Spring-centered)
11.9 kg
1620 Old Apex Road
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