Bosch Rexroth | 4WEH22E7X6EW110N9TS2DALP45
4WEH22E7X/6EW110N9TS2DAL/P4.5
Request a Quote
Call For Quote
What Happens Next?
Email Confirmation
You will get an email confirming we have received your inquiry.
Dedicated Account Manager
A team member will review your request and be in touch concerning any questions or specifications.
Quote Delivered
You will receive a comprehensive quote tailored to your specific needs.
The 4WEH22E7X/6EW110N9TS2DAL/P4.5 valve is manufactured by Bosch Rexroth for the WEH Directional Spool Valves series and is used to direct hydraulic flow in automated machinery. It employs electro-hydraulic actuation so an electrical signal energizes a pilot stage that moves the main spool without manual effort. The valve uses a 4-way configuration to connect pressure and tank lines with two actuator ports for bidirectional cylinder control. Its NG25 W.H 22 size offers passage dimensions suitable for medium to high flow circuits. A porting pattern of ISO 4401-08-08-0-05 allows the body to mount on standard subplates without adapter blocks. The spool provides three spring-centered positions that return to neutral when pilot pressure is removed. A concealed N9 manual override is included for emergency or test shifts while protecting the button from accidental operation. Switching time can be trimmed with the S2 discharge control so the user can balance response speed and overshoot. Control oil enters externally through port X and returns internally through port T to keep pilot and main flows separate. For the shortest switching time a pilot flow of 35 l/min must be supplied.
The main flow rating reaches 450 l/min so the valve can serve actuators with high displacement. Ports P, A, and B withstand 280 bar operating pressure. That margin enables use in heavy-duty hydraulic presses or mobile equipment. The pilot stage tolerates up to 210 bar. This rating protects the control circuit when full system pressure is applied. A minimum pilot pressure of 10.5 bar is required to overcome the centering springs when the pilot supply is external. Each actuation moves 7.64 cm³ of pilot oil, a volume that influences the sizing of pilot supply components. The preload valve opens at 4.5 bar to stabilize the pilot line before the spool begins to travel. In the two-solenoid spring-centered form the assembly weighs 11.9 kg, a factor when selecting mounting hardware.
Technical Specifications
Actuation Type
Electro-Hydraulic
Manual Override
Concealed (N9)
Max Flow (ng25 W.h 22, E)
450 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
210 bar
Min Pilot Pressure (3-pos Spring, X External)
10.5 bar
Pilot Flow For Shortest Switching Time
35 l/min
Pilot Oil Return
Internal (T)
Pilot Oil Supply
External (X)
Pilot Volume (3-pos Spring)
7.64 cm³
Porting Pattern
ISO 4401-08-08-0-05
Preload Valve Cracking Pressure
4.5 bar
Size
NG25 (W.H 22)
Spool Positions
3 (Spring-Centered)
Switching Time Adjustment
Discharge Control (S2)
Valve Configuration
4-Way
Weight (2 Solenoids, Spring-centered)
11.9 kg
1620 Old Apex Road
Shipping & Payment Options
