Bosch Rexroth | 4WEH22EB7X6EW110N9K4
4WEH22EB7X/6EW110N9K4
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The 4WEH22EB7X/6EW110N9K4 valve is part of the WEH Directional Spool Valves series from Bosch Rexroth and is used to route hydraulic flow in automated machinery. It is built in valve size NG25 and mounts on a subplate that follows the ISO 4401-08-08-0-05 pattern. The unit provides three spring-centered spool positions, identified by the E spool symbol, so a controller can shift between two work directions and a centered block. An external pilot oil supply drives the spool as soon as at least 10.5 bar is present, enabling independent actuation from main line pressure. When open, the valve carries up to 450 l/min while the pressure in ports P, A, and B may rise to 280 bar without damage.
A DIN EN 175301-803 K4 connector feeds the two solenoids, and a concealed manual override offers local shifting during commissioning or power loss. The pilot circuit withstands 210 bar, the Y return port handles 160 bar, and the tank port t is limited to 250 bar. Six M12 × 60 mounting bolts tightened to 100 Nm secure the 11.9 kg body to its manifold, preventing movement under load reversals.
Technical Specifications
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (symbol E)
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 (3-pos Spring)
10.5 bar
Mounting Screw Torque
100 Nm
Mounting Screws
M12 x 60 (6 pcs)
Pilot Oil Supply
External (X)
Pilot Return Port Y Max Pressure (ac)
160 bar
Porting Pattern
ISO 4401-08-08-0-05
Spool Positions
3 (Spring-Centered)
Spool Symbol
E
Valve Size
NG25
Weight (two Solenoids)
11.9 kg
1620 Old Apex Road
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