Bosch Rexroth | H-4WEH22D7X6EW110N9DA
H-4WEH22D7X/6EW110N9DA
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 H-4WEH22D7X/6EW110N9DA directional spool valve is manufactured by Bosch Rexroth for the WEH Directional Spool Valves series and directs oil flow in hydraulic automation circuits. It matches installations that use the NG25 nominal size, and its maximum flow rate of 450 l/min allows high-volume actuators to run without excess pressure loss. Working ports P, A, and B withstand up to 350 bar, while the return port T is limited to 250 bar for safe tank discharge. A porting pattern of ISO 4401-08-08-0-05 lets the valve bolt directly onto standardized subplates, and correct function depends on a horizontal installation position that keeps pilot passages clear of air pockets. System cleanliness must stay at ISO 4406 class 20/18/15 to avoid spool sticking and seal damage.
Remote actuation is handled by a pilot stage that operates between 8 bar and 210 bar; the lower limit ensures reliable shifting, and the upper limit protects pilot components from over-loading. Each switching event consumes 15.28 cm³ of pilot oil, data that helps engineers size drain lines and accumulators. The housing is fixed to the manifold with six M12 × 60 screws, and each screw requires 100 Nm of torque to maintain a leak-free seal under load. An MTTFd of 100 years indicates a very low probability of dangerous failure, supporting long-term service in safety-related hydraulic controls.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Installation Position
Horizontal
Max Flow
450 l/min
Max Operating Pressure (p, A, B)
350 bar
Max Pilot Pressure
210 bar
Max Pressure (port T)
250 bar
Min Pilot Pressure
8 bar
Mounting Screws
6x M12 x 60
Mttfd
100 years
Nominal Size
NG25
Pilot Volume Per Switching
15.28 cm³
Porting Pattern
ISO 4401-08-08-0-05
Screw Torque (m12)
100 Nm
1620 Old Apex Road
Shipping & Payment Options
