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The 4WEH32G6X/6EG96N9TK4 directional spool valve is supplied by Bosch Rexroth as part of the WEH Directional Spool Valves series. It functions as a remotely piloted element that shifts flow paths in hydraulic automation circuits. The NG32 size establishes mounting dimensions and helps determine flow capability. At 280 bar in the P, A, and B ports the valve conducts up to 650 l/min, making it suitable for high-volume actuators. Oil temperatures may rise to 80 °C, and the unit tolerates viscosities from 2.8 to 500 mm²/s so a broad range of operating conditions can be handled without loss of control accuracy. Approved pressure media include HL, HLP, HLPD, HVLP, and HVLPD fluids, supporting standard mineral-based and detergent blends used in industrial power units.
Installation details support dependable service in plant environments. The housing follows porting pattern ISO 4401-10-09-0-05 for interchange with common subplates, and electrical actuation connects through a DIN EN 175301-803 interface that matches conventional solenoid cord sets. External pilot oil is supplied through port X, while return flow is routed internally to tank via port T, simplifying line routing. The pilot stage requires at least 8.5 bar and may be fed up to 250 bar, aligning with auxiliary pressure manifolds. Port T withstands 250 bar to prevent back-pressure-induced malfunction. System cleanliness must meet ISO 4406 code 20/18/15 to protect the precision spool fit. Continuous operation is permitted in ambient temperatures up to 50 °C so cabinet cooling is rarely needed.
Ambient Temperature Max
+50 °C
Cleanliness Class
ISO 4406 20/18/15
Electrical Connection
DIN EN 175301-803
Fluid Temperature Max
+80 °C
Hydraulic Fluids
HL, HLP, HLPD, HVLP, HVLPD
Max Flow (g At 280 Bar)
650 l/min
Max Pilot Pressure
250 bar
Max Pressure (p, A, B)
280 bar
Max Pressure Port T
250 bar
Min Pilot Pressure (x External)
8.5 bar
Pilot Oil Return
Internal (T to tank)
Pilot Oil Supply
External (X)
Porting Pattern
ISO 4401-10-09-0-05
Size
NG32
Viscosity Maximum
500 mm²/s
Viscosity Minimum
2.8 mm²/s
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