Bosch Rexroth | 4WEH22E7X6EW110N9TDA
4WEH22E7X/6EW110N9TDA
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/6EW110N9TDA valve belongs to the WEH Directional Spool Valves series produced by Bosch Rexroth for hydraulic automation circuits. It is built in size NG25, identified within the catalog as W.H 22, so it fits medium-flow manifolds. The spool symbol E in a 4/3 configuration provides three positions that control flow paths in both directions for cylinder or motor circuits. With spool type E, the valve handles a maximum flow of 450 l/min, allowing high volume actuation without excessive pressure loss. Ports p, a, and b are rated for a maximum operating pressure of 280 bar, covering typical industrial power units. Pilot actuation is achieved through a 4WE 6 high-power pilot valve, type 6E, which receives external pilot oil via port X. The pilot stage runs on a rated voltage of 110 V AC, enabling direct connection to standard control cabinets. When the center position is shifted, pilot oil returns internally through channel T, simplifying plumbing. For reliable movement of the three-position spool, the external pilot circuit must maintain at least 10.5 bar.
The same unit supports pilot pressures up to 210 bar, giving a wide control range for fast response. Pilot return passage t and port Ac withstand up to 160 bar, preventing seal damage during high back-pressure events. Hydraulic cleanliness must not exceed class 20/18/15 according to ISO 4406, ensuring valve seats remain free of abrasive debris. A concealed manual override, coded N9, permits local shifting of the spool when electrical power is unavailable. The valve mounts on a subplate following interface ISO 4401-08-08-0-05, so it can replace comparable NG25 valves without manifold changes. Functional safety calculations list an MTTFd of 100 years, reflecting the mechanical reliability expected in standard duty cycles. Together these parameters allow controlled operation with straightforward maintenance across demanding hydraulic installations.
Technical Specifications
Cleanliness Class (iso 4406)
20/18/15
Manual Override
Concealed (N9)
Max Flow (spool E)
450 l/min
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
210 bar
Max Pilot Return Pressure (t, Ac)
160 bar
Min Pilot Pressure (3-spool)
10.5 bar
Mounting Pattern
ISO 4401-08-08-0-05
Mounting Type
Subplate
Mttfd (en Iso 13849)
100 Years
Pilot Control Valve
4WE 6 High-Power (6E)
Pilot Oil Return
Internal (T)
Pilot Oil Supply
External (X)
Rated Voltage (pilot Valve)
110 V AC
Size
NG25 (W.H 22)
Spool Symbol
E (4/3)
1620 Old Apex Road
Shipping & Payment Options
