Bosch Rexroth | 4WEH32D6X6EW110N9K4
4WEH32D6X/6EW110N9K4
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The 4WEH32D6X/6EW110N9K4 valve is part of the WEH Directional Spool Valves series from Bosch Rexroth and is installed to shift hydraulic flow between two positions in automation circuits. This NG32 valve uses a D two-position spool to alternate connection paths quickly. An ISO 4401-10-09-0-05 mounting pattern aligns the body with standardized subplates. Pilot supply is external through port X so system pressure, not internal diversion, moves the spool, while external return via port Y prevents tank backpressure from influencing pilot chambers. Reliable actuation begins at a minimum pilot pressure of 10 bar, and working ports A and B tolerate up to 280 bar during operation. The T return port is limited to 250 bar, and the auxiliary Y or Ac drain port is restricted to 160 bar, maintaining seal integrity under varying loads.
At full operating pressure of 280 bar the valve passes up to 480 l/min, supporting high-flow circuits. One solenoid version weighs 17.6 kg, allowing rigid mounting without additional supports. Hydraulic cleanliness must meet ISO 4406 code 20/18/15 to protect internal lands from abrasion. A protective coating not exceeding 100 µm guards the housing against corrosion while preserving dimensional fit. Electrical connection is made through a DIN EN 175301-803 K4 plug to standardize wiring with other field devices. A concealed N9 manual override lets maintenance personnel shift the spool when power is absent without exposing moving parts. Pilot control can reach 250 bar, providing ample margin over the minimum threshold described earlier.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Coating Thickness
100 µm max
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (d, P=280 Bar)
480 l/min
Max Pilot Pressure
250 bar
Max Pressure (p, A, B)
280 bar
Max Pressure (port T)
250 bar
Max Pressure (port Y, Ac)
160 bar
Min Pilot Pressure
10 bar
Pilot Return
External (Y)
Pilot Supply
External (X)
Porting Pattern
ISO 4401-10-09-0-05
Spool Type
D (2-Position)
Valve Size
NG32
Weight (1 Solenoid)
17.6 kg
1620 Old Apex Road
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