Bosch Rexroth | 4WEH22C7X5EW110N9K4V
4WEH22C7X/5EW110N9K4/V
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The 4WEH22C7X/5EW110N9K4/V valve is produced by Bosch Rexroth for the WEH Directional Spool Valves series. It directs pressurized fluid toward selected actuator ports in hydraulic automation circuits. Electro-hydraulic actuation converts an electrical pilot signal into spool movement so the main flow can be switched without high coil forces. The NG25 nominal size aligns the unit with manifolds that handle mid- to high-capacity systems, and the ISO 4401-08-08-0-05 porting pattern simplifies block mounting on standard subplates. A C-type spool establishes symmetrical flow paths suited for cylinder control, while a rated flow of 450 l/min allows rapid actuator motion. The valve withstands 280 bar on ports P, A, and B, and the T port is limited to 250 bar to protect tank lines. FKM seals tolerate aggressive fluids and, together with a maximum fluid temperature of 80 °C, maintain leak-free operation under thermal load.
Electrical termination is via a DIN EN 175301-803 K4 connector so wiring can be completed with common industrial plugs. Pilot oil is supplied internally, reducing external hoses, while the return is routed externally to prevent pressure build-up on the pilot stage. The pilot circuit accepts pressures between 11 bar and 210 bar, ensuring reliable spool shift over a broad supply range. A concealed N9 manual override permits local actuation during commissioning without exposing moving parts. Required fluid cleanliness is ISO 4406 class 20/18/15 to preserve spool fit accuracy, and an external filter should be sized accordingly. These features allow the valve to switch quickly and repeatably in automated presses and machine tools where precise directional control is essential.
Technical Specifications
Actuation
Electro-Hydraulic
Electrical Connection
DIN EN 175301-803 (K4)
Fluid Cleanliness
ISO 4406 20/18/15
Fluid Temp Max
+80 C (FKM)
Manual Override
Concealed (N9)
Max Flow
450 l/min
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
210 bar
Max Pressure Port T
250 bar
Min Pilot Pressure
11 bar
Nominal Size
NG25
Pilot Oil Return
External (E)
Pilot Oil Supply
Internal (E)
Porting Pattern
ISO 4401-08-08-0-05
Seal Material
FKM (V)
Spool Symbol
C
1620 Old Apex Road
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