Bosch Rexroth | 4WEH22G7X6EW110N9EDAB10P4-5V
4WEH22G7X/6EW110N9EDA/B10P4 5V
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The 4WEH22G7X/6EW110N9EDA/B10P4 5V directional valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth for controlling hydraulic actuators in automated machinery. Its nominal size NG25 fits manifolds built for the “W.H 22” envelope, while the ISO 4401-08-08-0-05 porting pattern standardizes mounting holes and port layout. A spool coded G defines the internal flow paths, and a spring-centered return drives the spool back to neutral when the solenoids are de-energized. The assembly works with line pressures up to 280 bar on ports P, A, and B, and withstands 250 bar on the tank port T. Actuation is handled by an integral 4WE 6E pilot valve, and the pilot oil is supplied internally so no separate pressure line is required.
Pilot oil drains externally through port Y, so back-pressure in the main tank line does not influence control accuracy. The pilot circuit accepts pressures up to 210 bar and requires at least 4.5 bar to shift, matching the preload valve cracking pressure of 4.5 bar that initiates pilot flow. A pilot volume of 7.64 cm³ in the spring-centered design influences response time by determining the amount of oil that must be displaced. A throttle insert with a 1.0 mm orifice meters this flow to damp spool movement and prevent shock. FKM seals resist heat and aggressive hydraulic media, maintaining leak-tightness under long-term duty. The assembled unit with two solenoids weighs 11.9 kg, a consideration for manifold support structures in mobile or stationary equipment.
Technical Specifications
Max Operating Pressure (p,a,b)
280 bar
Max Operating Pressure (port T)
250 bar
Max Pilot Pressure
210 bar
Min Pilot Pressure (internal)
4.5 bar
Nominal Size
NG25 ("W.H 22")
Pilot Control Valve
4WE 6E
Pilot Oil Return
External (Y)
Pilot Oil Supply
Internal
Pilot Volume (spring-centered)
7.64 cm³
Porting Pattern
ISO 4401-08-08-0-05
Preload Valve Cracking Pressure
4.5 bar
Seal Material
FKM
Spool Return
Spring-Centered
Spool Symbol
G
Throttle Insert
Ø 1.0 mm
Weight (2 Solenoids)
11.9 kg
1620 Old Apex Road
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