Bosch Rexroth | 3WH6B5XV5
3WH6B5X/V/5
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The 3WH6B5X/V/5 directional spool valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth for use in hydraulic automation circuits. Being hydraulically actuated, the spool is shifted by pilot oil pressure rather than by a solenoid or mechanical lever, allowing remote control in complex systems. Its nominal size of 6 defines the internal flow channels to suit medium-capacity lines. Three port connections provide pressure, work, and return paths, while two switching positions give a straightforward on-off function for the selected actuator. The valve mounts on a subplate, so it can be replaced without disturbing pipework, and it may be installed in any orientation, simplifying manifold layout. FKM seals resist heat and aggressive fluids, maintaining leakage control over long duty cycles. A pilot volume of 1.23 cm³ must be filled during every shift, which determines response time and the capacity of the pilot supply.
The hydraulic section is rated for a continuous operating pressure of 315 bar, so it matches high-pressure industrial power units, and it passes up to 60 l/min without exceeding allowable velocity in the ports. The pilot stage requires at least 4 bar to move the spool and tolerates up to 200 bar, giving a wide margin for circuit design. Port T withstands a back-pressure of 160 bar, enabling the valve to drain into boosted return lines. Port geometry follows ISO 4401-03-02-0-05, and the equivalent NFPA T3.5.1 R2-2002 D03 pattern, ensuring interchangeability with common CETOP 03 manifolds. Fluid entering the unit must meet cleanliness class ISO 4406 20/18/15 to protect the precision-ground spool lands from contamination-induced wear.
Technical Specifications
Actuation Type
Hydraulic
Cleanliness Class
ISO 4406 20/18/15
Connection Diagram
ISO 4401-03-02-0-05
Installation Position
Any
Max Flow
60 l/min
Max Operating Pressure
315 bar
Max Pilot Pressure
200 bar
Max Pressure Port T
160 bar
Min Pilot Pressure
4 bar
Mounting Type
Subplate
Nfpa Connection Diagram
NFPA T3.5.1 R2-2002 D03
Nominal Size
6
Number Of Ports
3
Number Of Switching Positions
2
Pilot Volume
1.23 cm3
Seal Material
FKM
1620 Old Apex Road
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