Bosch Rexroth | H-4WEH25D6X6EW110N9ES2DAVB10V-AN
H-4WEH25D6X/6EW110N9ES2DAV/B10V AN
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The H-4WEH25D6X/6EW110N9ES2DAV/B10V AN valve is manufactured by Bosch Rexroth and belongs to the WEH Directional Spool Valves series. It directs flow in hydraulic automation circuits through a size NG25 porting interface. The component is identified as series 6X and carries two discrete spool positions arranged according to spool symbol D for on-off actuation of service lines. Hydraulic force returns the control spool, eliminating external springs. Pilot oil is taken internally from port E, while spent pilot oil is routed externally through port Y; this external return is rated for up to 160 bar. Connection surfaces follow the ISO 4401-08-08-0-05 pattern, and FKM seals isolate all pressure zones.
The valve handles main line pressures to 350 bar at ports P, A, and B and accepts pilot pressures up to 250 bar to shift the spool. Reliable switching begins at a minimum pilot pressure of 13 bar on the two-position design. At 70 bar supply and with the D spool, the performance limit reaches 700 l/min, supporting high-flow actuators. A discharge-type switching time adjustment designated S2 permits tuning of actuation speed for system stability. An optional 1.0 mm throttle insert coded B10 can be installed to restrict inlet flow when needed. These ratings combine to define a valve suitable for precise, high-flow direction control in automated hydraulic machinery.
Technical Specifications
Component Series
6X
Control Spool Return
Hydraulic
Max Operating Pressure (p,a,b)
350 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (2-spool)
13 bar
Performance Limit (70 Bar, D)
700 l/min
Pilot Oil Return
External (Y)
Pilot Oil Supply
Internal (E)
Pilot Return Max Pressure (y, Ac)
160 bar
Porting Pattern
ISO 4401-08-08-0-05
Seal Material
FKM
Spool Positions
2
Spool Symbol
D
Switching Time Adjustment
Discharge (S2)
Throttle Insert
Ø 1.0 mm (B10)
Valve Size
NG25
1620 Old Apex Road
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