Bosch Rexroth | 4WEH22C7X6EW110N9K4
4WEH22C7X/6EW110N9K4
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The 4WEH22C7X/6EW110N9K4 directional spool valve is manufactured by Bosch Rexroth for the WEH Directional Spool Valves series and routes hydraulic flow in automated systems. Its nominal size of NG25 matches circuits that use 25 mm interface ports, and a maximum flow capacity of 450 l/min supplies large actuators without excessive pressure drop. The valve withstands a maximum operating pressure of 280 bar, making it suitable for high-pressure power units. Subplate mounting allows quick removal while leaving pipework fixed, and the ISO 4401-08-08-0-05 porting pattern keeps the unit interchangeable with standard manifolds. A DIN EN 175301-803 K4 electrical connector gives a fast plug-in link to the solenoid coil, and the single-solenoid configuration weighs 11.5 kg to support rigid installation.
Internal or external pilot oil supply and return identified by the E code let designers choose the most convenient control source. The pilot circuit accepts pressures up to 210 bar, while a minimum of 11 bar is required to shift the spool to its spring-offset position in two-position service. An ambient temperature range of ‑20 to +50 °C keeps the enclosure and seals within safe limits, and the hydraulic fluid may operate from ‑20 to +80 °C for cold starts or hot running conditions. Fluid viscosities between 2.8 and 500 mm²/s are tolerated, and a cleanliness class of ISO 4406 20/18/15 guards the precision spool against abrasive wear. A concealed manual override labeled N9 enables technicians to actuate the valve during setup without exposing the mechanism to contamination.
Technical Specifications
Ambient Temperature Range (nbr)
-20 to +50 C
Cleanliness Class
ISO 4406 (c) 20/18/15
Electrical Connection
DIN EN 175301-803 (K4)
Hydraulic Fluid Temp Range (nbr)
-20 to +80 C
Manual Override
Concealed (N9)
Max Flow (symbol C)
450 l/min
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
210 bar
Min Pilot Pressure (2-pos., Spring End)
11 bar
Mounting
Subplate
Nominal Size
NG25
Pilot Oil Supply/return
Internal/External (E)
Porting Pattern
ISO 4401-08-08-0-05
Viscosity Range
2.8 to 500 mm2/s
Weight (1-solenoid)
11.5 kg
1620 Old Apex Road
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