Bosch Rexroth | 4WEH16E7X6EW110N9ETDAB10
4WEH16E7X/6EW110N9ETDA/B10
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The 4WEH16E7X/6EW110N9ETDA/B10 valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and serves as an electro-hydraulic element for automated flow direction in hydraulic power units. Electro-hydraulic actuation lets an electrical signal move the spool without direct mechanical force, which is suitable for remote or PLC-based control. The 4-way configuration provides four flow paths so cylinders or motors can extend and retract under the same valve body. A nominal size of NG16 establishes the flow capacity for medium-duty circuits, while the ISO 4401-07-07-0-05 porting pattern aligns with common subplates to simplify installation. Spool symbol E determines the neutral flow condition demanded by equipment that must block pressure lines at center. A Ø1.0 mm throttle insert in port B10 limits pilot flow to stabilize shifting speed. The valve withstands 280 bar at ports P, A, and B, and it accepts hydraulic fluids between 2.8 mm²/s and 500 mm²/s to cover typical mineral oil viscosities.
Internal pilot supply and return, coded ET, route control oil from the pressure gallery and back to tank without external lines, which reduces manifold plumbing. A minimum pilot pressure of 14 bar ensures the solenoid-operated pilot stage can move the main spool, while a 250 bar pilot pressure limit matches most industrial control circuits. Port T also tolerates up to 250 bar so the valve can be used in systems with elevated backpressure. A concealed manual override, indicated by N9, lets maintenance staff shift the spool locally when electrical power is unavailable. Cleanliness class ISO 4406 20/18/15 defines the maximum particle count allowed in the fluid to protect the precision-machined lands from wear. The assembly weighs 8.9 kg with two solenoids installed, a figure that guides manifold support sizing and mounting hardware selection.
Technical Specifications
Actuation
Electro-Hydraulic
Cleanliness Class
ISO 4406 20/18/15
Manual Override
Concealed (N9)
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure
14 bar
Nominal Size
NG16
Pilot Return
Internal (ET)
Pilot Supply
Internal (ET)
Port T Max Pressure
250 bar
Porting Pattern
ISO 4401-07-07-0-05
Spool Symbol
E
Throttle Insert
Ø1.0 mm (B10)
Viscosity Range
2.8 … 500 mm²/s
Way Configuration
4-Way
Weight (2 Solenoids)
8.9 kg
1620 Old Apex Road
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