Bosch Rexroth | 4WEH22J7X6EW110N9ETS2DAB10
4WEH22J7X/6EW110N9ETS2DA/B10
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The 4WEH22J7X/6EW110N9ETS2DA/B10 directional spool valve is produced by Bosch Rexroth within the WEH Directional Spool Valves series. It directs hydraulic flow in automated machinery and operates with pilot pressure. Passage dimensions correspond to the NG25 nominal size, and the body mounts on subplates that follow the ISO 4401-08-08-0-05 porting pattern. P, A, and B lines can be pressurized to 280 bar, while the pilot stage accepts up to 210 bar. Spring-centered return needs at least 10.5 bar pilot pressure to shift the spool, and a 1.0 mm throttle insert orifice tempers pilot flow for stable actuation.
The valve passes 600 l/min at 280 bar and 520 l/min at 350 bar, setting clear performance limits for circuit sizing. Six M12 × 60 screws in accordance with ISO 4762 secure the housing, and each screw requires 100 Nm tightening torque to maintain joint integrity. A surface coating up to 100 µm thick protects against corrosion without altering fit. Mean time to dangerous failure is rated at 100 years, providing long service life in safety-related installations. These construction details support dependable directional control in high-pressure hydraulic systems.
Technical Specifications
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
210 bar
Min Pilot Pressure (spring-centered)
10.5 bar
Mounting Screws
6x M12 x 60 (ISO 4762)
Mttfd
100 years
Nominal Size
NG25
Performance Limit At 280 Bar (j)
600 l/min
Performance Limit At 350 Bar (j)
520 l/min
Porting Pattern
ISO 4401-08-08-0-05
Surface Coating Thickness (max)
100 µm
Throttle Insert Orifice
1.0 mm
Tightening Torque (m12 Screws)
100 Nm
1620 Old Apex Road
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