Bosch Rexroth | H-4WEH16D7X6EG24N9K4-CSA
H-4WEH16D7X/6EG24N9K4 CSA
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The H-4WEH16D7X/6EG24N9K4 CSA directional spool valve belongs to the WEH Directional Spool Valves series produced by Bosch Rexroth for hydraulic automation circuits that require reliable on-off flow control. It is built in size NG16 and uses spool symbol D to direct oil between work ports. With an external pilot supply marked X and an external pilot return marked Y, the unit keeps pilot oil separated from the main flow path. The valve handles a maximum operating pressure of 350 bar at ports p, a, and b, while the D-spool passes up to 230 l/min at 350 bar. A 24 V DC coil actuates the solenoid, and a spring end position mechanism returns the control spool when the coil is de-energized.
The maximum pilot pressure permitted is 250 bar, and safe shifting is maintained down to a minimum pilot pressure of 14 bar for the two-position spring-center arrangement. Connection to system wiring is made through a DIN EN 175301-803 form K4 plug, and a concealed manual override coded N9 permits local actuation during commissioning or power loss. The mounting interface follows porting pattern ISO 4401-07-07-0-05 and is secured with ISO 4762 M10 × 60 screws tightened to 58 Nm. With one solenoid installed, the valve weighs 8.5 kg, supporting rigid mounting without additional brackets.
Technical Specifications
Coil Voltage
24 V DC
Control Spool Return
Spring End Position
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (symbol D, 350 Bar)
230 l/min
Max Operating Pressure (p,a,b)
350 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (2-pos Spring End)
14 bar
Mounting Screw Torque
58 Nm
Mounting Screws
ISO 4762 M10 x 60
Pilot Return
External (Y)
Pilot Supply
External (X)
Porting Pattern
ISO 4401-07-07-0-05
Size
NG16
Spool Symbol
D
Weight (one Solenoid)
8.5 kg
1620 Old Apex Road
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