Bosch Rexroth | 4WEH22J7X6EW110N9ETDAB10V
4WEH22J7X/6EW110N9ETDA/B10V
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The 4WEH22J7X/6EW110N9ETDA/B10V valve is supplied by Bosch Rexroth within the WEH Directional Spool Valves series. It directs pressure and return flow in hydraulic automation circuits through electro-hydraulic actuation, so an internal pilot stage moves the main spool without direct solenoid force. A nominal size of 25 establishes the flow passage dimensions, and the J spool symbol defines the internal port connections selected during operation. The unit offers three spool positions to switch between forward, reverse, and neutral flow states. When the center position is left, passage can handle up to 450 l/min, while the P, A, and B ports withstand 280 bar. Pilot control is limited to 210 bar, and both the ET supply and T return are taken internally, which eliminates external pilot lines. A 1.0 mm throttle insert marked B10 meters the pilot oil for stable shifting.
For installation, the valve attaches to a subplate using the ISO 4401-08-08-0-05 porting pattern, allowing quick exchange with other size-25 components. A concealed N9 manual override lets maintenance staff shift the spool mechanically when electrical power is absent. Sealing elements are molded from FKM, so the product tolerates higher fluid temperatures and synthetic oils. The required fluid cleanliness is ISO 4406 20/18/15, meaning filtration must hold particulate contamination below that code to protect precision edges. Functional safety is reflected by an MTTFd of 100 years, indicating a long statistical service life in continuous duty. These characteristics provide dependable directional control for hydraulic automation.
Technical Specifications
Actuation Type
Electro-Hydraulic
Fluid Cleanliness Class
ISO 4406 20/18/15
Manual Override
Concealed (N9)
Max Flow (symbol J, Ng25)
450 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
210 bar
Mounting Type
Subplate Mounting
Mttfd (type Weh)
100 years
Nominal Size (ng)
25
Pilot Oil Return
Internal (T)
Pilot Oil Supply
Internal (ET)
Porting Pattern
ISO 4401-08-08-0-05
Seal Material
FKM (V)
Spool Positions
3
Spool Symbol
J
Throttle Insert
Ø 1.0 mm (B10)
1620 Old Apex Road
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