Bosch Rexroth | H-4WEH16Q7X6EG24N9ETK4B10D3
H-4WEH16Q7X/6EG24N9ETK4/B10D3
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The H-4WEH16Q7X/6EG24N9ETK4/B10D3 valve is produced by Bosch Rexroth within the WEH Directional Spool Valves series and directs hydraulic flow in automated machinery. It is a 4/3-way unit in NG16 size, giving four working ports and three distinct spool positions for versatile circuit control. Spool symbol Q defines the internal flow paths selected during actuation. The spool is pressure centered, so it returns to the neutral position when pilot pressure is removed; this design needs at least 16 bar pilot pressure to shift reliably. A 24 V DC coil energizes each solenoid, and the electrical interface uses a DIN EN 175301-803 K4 plug for quick connection. A concealed N9 manual override allows local shifting without exposing the mechanism. Internal X/Y pilot supply and return eliminate external pilot lines, while channels A and B can withstand up to 350 bar operating pressure.
The valve accommodates up to 300 l/min through the NG16 port set, and a zero cross-section of 32 mm² ensures sufficient passage area when the spool is fully stroked. A 1.0 mm B10 throttle orifice is integrated to damp pilot flow and reduce switching shock. A D3 pressure reducing valve is included to stabilize pilot pressure when system fluctuations occur. The mounting face follows the ISO 4401-07-07-0-05 pattern, allowing direct installation on standardized sub-plates. Mass for the model with two solenoids is 8.9 kg, which supports rigid mounting without external braces.
Technical Specifications
Centering Type
Pressure-Centered
Coil Voltage
24 V DC
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (ng16)
300 l/min
Max Operating Pressure (p, A, B)
350 bar
Min Pilot Pressure (pressure-centered)
16 bar
Pilot Supply/return
Internal (X/Y)
Porting Pattern
ISO 4401-07-07-0-05
Pressure Reducing Valve
D3 Included
Size
NG16
Spool Symbol
Q
Throttle Orifice
1.0 mm (B10)
Valve Configuration
4/3-Way
Weight (two Solenoids)
8.9 kg
Zero Cross-section (q, A–t/b–t)
32 mm2
1620 Old Apex Road
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