Bosch Rexroth | 4WEH16D7XOF6EW110N9ETK4V
4WEH16D7X/OF6EW110N9ETK4/V
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The 4WEH16D7X/OF6EW110N9ETK4/V valve belongs to the WEH Directional Spool Valves series manufactured by Bosch Rexroth for hydraulic automation circuits that require reliable on-off flow control. It is built in size NG16, establishing its mounting envelope and flow channels. A 4-way configuration provides four ports for pressure, tank, and two actuator lines, while spool symbol D defines the discrete flow paths obtained in each switching state. The porting pattern conforms to ISO 4401-07-07-0-05 so it mates with standardized subplates. The unit passes up to 300 l/min, and pilot control may work against pressures as high as 250 bar. Internal pilot supply needs at least 4.5 bar, and a pilot flow of 35 l/min is required to reach the fastest changeover times.
Concealed manual override N9 permits local actuation when electrical power is absent without exposing moving parts. The electrical interface follows DIN EN 175301-803 K4, allowing quick coil replacement. Pilot oil is supplied internally through the ET channel and returns internally via port T, which simplifies external piping. When a two-spool hydraulic end position is used, the pilot circuit must maintain a minimum of 14 bar to hold the spool firmly. Installation uses four M10 × 60 screws per ISO 4762; each bolt should be tightened to 58 Nm to secure the body to the subplate. FKM seals designated by code V resist high temperature and aggressive fluids, preserving leak-tight performance throughout the service life.
Technical Specifications
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Maximum Flow
300 l/min
Maximum Pilot Pressure
250 bar
Min Pilot Pressure (2-spool, Hyd. End Pos.)
14 bar
Min Pilot Pressure (x Internal, Weh)
4.5 bar
Mounting Screws
4x M10 × 60 (ISO 4762)
Pilot Flow For Fastest Switching
35 l/min
Pilot Oil Return
Internal (T)
Pilot Oil Supply
Internal (ET)
Porting Pattern
ISO 4401-07-07-0-05
Screw Tightening Torque
58 Nm
Seal Material
FKM (V)
Size
NG16
Spool Symbol
D
Way Configuration
4-Way
1620 Old Apex Road
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