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The 4WH6D5X/OF/V/5 valve is produced by Bosch Rexroth as part of the WEH Directional Spool Valves series and provides directional control for hydraulic actuators in automated machinery. Hydraulic actuation moves the internal spool, and the valve size 6 determines its mounting footprint and flow galleries. A spool symbol D defines the cross-porting pattern once the element shifts, while four working ports enable connection to pressure, tank, and two actuator lines. The DIN 24340 Form A porting pattern and an ISO 4401-03-02-0-05 interface let the body fit manifold blocks that follow common industrial layouts. The unit can be mounted in any position, giving design freedom inside compact power packs or machine frames. For pressure lines a, b, and p, the assembly tolerates up to 315 bar, allowing it to operate in high-pressure circuits without derating.
The directional valve passes up to 60 l/min, so cylinder or motor speeds stay consistent with medium-sized flow demands. A pilot signal of up to 200 bar is accepted, ensuring reliable shifting even when main line pressures surge. Port T sustains back-pressure to 160 bar, which supports remote tank routing or counterbalance networks. FKM seals resist many hydraulic oils and hold tight over an ambient range from -20 °C to 80 °C, avoiding leakage during temperature swings. A detent holds the spool in its last commanded position, and the design omits a spring return, so position changes occur only when pilot pressure is applied. Together these features support predictable circuit behavior in mobile and stationary automation tasks.
Actuation Type
Hydraulic
Ambient Temp Max (fkm)
80 °C
Ambient Temp Min (fkm)
-20 °C
Detent
Yes
Installation Position
Any
Maximum Flow Rate
60 l/min
Maximum Operating Pressure (a,b,p)
315 bar
Maximum Pilot Pressure
200 bar
Maximum Pressure Port T
160 bar
Mounting Interface
ISO 4401-03-02-0-05
Number Of Ports
4
Porting Pattern
DIN 24340 Form A
Seal Material
FKM
Spool Symbol
D
Spring Return
No
Valve Size
6
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