Bosch Rexroth | 4WEH16D7X6EG24N9TK4
4WEH16D7X/6EG24N9TK4
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The 4WEH16D7X/6EG24N9TK4 valve is built by Bosch Rexroth within the WEH Directional Spool Valves series to direct hydraulic flow in automated machinery. It is organized in size NG16, offering an installation envelope suited to mid-range circuits. Two spool positions provide binary switching of pressure and return lines, and a spring returns the main spool when pilot energy is removed. A concealed manual override lets maintenance staff shift the spool without energizing the solenoid. Electrical power is 24 V DC and arrives through a connector that follows DIN EN 175301-803. The interface follows porting pattern ISO 4401-07-07-0-05 so the unit fits standardized manifold layouts.
The valve mounts on a subplate, simplifying removal for service. Pilot oil is supplied externally through port X, and the return is routed internally to port T. Ports P, A and B withstand operating pressures up to 280 bar, while port T is limited to 250 bar. The pilot circuit may reach 250 bar but must stay above the 14 bar minimum to shift the spool. A maximum flow of 300 l/min allows the body to handle high-throughput actuators without cavitation. Hydraulic oil should meet cleanliness class ISO 4406 20/18/15 to maintain reliable performance.
Technical Specifications
Electrical Connection
DIN EN 175301-803
Fluid Cleanliness Class
ISO 4406 20/18/15
Main Spool Return
Spring
Manual Override
Concealed
Max Flow
300 l/min
Max Operating Pressure (p/a/b)
280 bar
Max Pilot Pressure
250 bar
Max Pressure Port T
250 bar
Min Pilot Pressure
14 bar
Mounting Type
Subplate
Pilot Oil Return
Internal (T)
Pilot Oil Supply
External (X)
Porting Pattern
ISO 4401-07-07-0-05
Rated Voltage
24 V DC
Size
NG16
Spool Positions
2
1620 Old Apex Road
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