Bosch Rexroth | H-4WEH16D7X6EG24N9ETK4B10D3
H-4WEH16D7X/6EG24N9ETK4/B10D3
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The H-4WEH16D7X/6EG24N9ETK4/B10D3 valve is manufactured by Bosch Rexroth for the WEH Directional Spool Valves series and directs hydraulic flow in automated machinery. It provides 4-way flow control with 2 discrete spool positions to route pressure and return lines during each machine cycle. Electro-hydraulic actuation shifts the main spool in response to a 24 V DC signal from the control system, giving quick, remote operation. The electrical interface follows DIN EN 175301-803 form K4, which matches common industrial connectors and aids service interchangeability. Size NG16 suits medium-flow circuits, and the ISO 4401-07-07-0-05 mounting pattern lets the unit bolt directly onto standardized subplates. Internal pilot supply and internal pilot return remove the need for external pilot hoses and simplify manifold design.
Operating pressure for ports P, A, and B is limited to 350 bar, supporting high-force cylinders without overstressing the body. Port T tolerates up to 250 bar so back-pressure can be used for controlled deceleration, while an external drain on port Y is rated at 210 bar for reliable pilot oil discharge. A built-in D3 pressure reducing valve keeps the pilot stage at a stable 45 bar, securing consistent spool movement when system pressure fluctuates. The Ø 1.0 mm throttle insert designated B10 restricts pilot flow to dampen switching impact. A concealed N9 manual override allows technicians to shift the spool mechanically during commissioning or power loss without exposing moving parts. These pressure limits, damping features, and backup override combine to ensure dependable direction control in automated hydraulic circuits.
Technical Specifications
Actuation
Electro-Hydraulic
D3 Secondary Pressure
45 bar
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Operating Pressure (p,a,b)
350 bar
Max Pressure Port T
250 bar
Max Pressure Port Y (external, Dc)
210 bar
Mounting Interface
ISO 4401-07-07-0-05
Pilot Return
Internal (T)
Pilot Supply
Internal
Pressure Reducing Valve
D3
Size
NG16
Spool Positions
2
Supply Voltage
24 V DC
Throttle Insert
Ø 1.0 mm (B10)
Valve Ways
4-Way
1620 Old Apex Road
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