Bosch Rexroth | 4WEH22C7X6EW110N9DAV
4WEH22C7X/6EW110N9DA/V
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The 4WEH22C7X/6EW110N9DA/V directional spool valve is produced by Bosch Rexroth for the WEH Directional Spool Valves series. It controls hydraulic flow in automation circuits using electro-hydraulic actuation for fast, remote switching. The valve installs on a subplate that follows the ISO 4401-07-07-0-05 mounting pattern, and it is secured with six M12 × 60 screws to maintain sealing integrity under load. Maximum operating pressure on ports P, A, and B reaches 280 bar so the device can handle standard industrial supply levels. A 6E high-power pilot valve shifts the main spool, and this pilot stage may be pressurized up to 210 bar to guarantee consistent movement. Spring-centered operation requires at least 10.5 bar at the external X pilot port to overcome the centering springs.
Port T tolerates back pressure up to 250 bar, allowing return circuits with significant restriction. FKM seals, coded V, provide compatibility with high-temperature or synthetic hydraulic media. The valve demands oil cleanliness of ISO 4406 class 20/18/15 to limit wear on the precision spool lands. A concealed manual override identified as N9 lets maintenance personnel shift the valve mechanically when electrical control is unavailable. An MTTFd of 100 years supports safety related calculations in machinery directives, and the NG25 size labeled W.H 22 aligns the flow capacity with large industrial actuators.
Technical Specifications
Actuation
Electro-Hydraulic
Hydraulic Fluid Cleanliness
ISO 4406 20/18/15
Manual Override
Concealed (N9)
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
210 bar
Max Pressure Port T
250 bar
Min Pilot Pressure (spring-centered, X Ext.)
10.5 bar
Mounting Pattern
ISO 4401-07-07-0-05
Mounting Screws
M12 × 60 (6 pcs)
Mounting Type
Subplate
Mttfd (type Weh)
100 years
Pilot Control Valve
6E High-Power Valve
Seal Material
FKM (V)
Size
NG25 (W.H 22)
1620 Old Apex Road
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