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### General
The Bosch Rexroth H-4WEH25HE6X/6EG24N9K4 Directional Spool Valve is a pilot-operated hydraulic control valve designed for dependable directional switching in high-performance industrial hydraulic systems. With a nominal size of NG25, a 24 V DC solenoid pilot control, and a subplate mounting configuration, the valve is suited to applications requiring high flow capacity and reliable hydraulic control. External pilot oil supply and external pilot oil return support the valve's pilot-operated configuration.

### Features
- Bosch Rexroth H-4WEH series pilot-operated directional spool valve
- NG25 nominal size
- 24 V DC solenoid actuation
- Maximum operating pressure up to 350 bar
- Maximum flow capacity up to 700 l/min (associated NG25 E-spool model specification)
- Four-way directional control
- Three switching positions (associated NG25 E-spool model specification)
- External pilot oil supply and external pilot oil return
- Subplate mounting
- ISO 4401-08-08-0-05 mounting interface
- 3-pole electrical connector (2 + PE)
- Connector standard EN 175301-803
- NBR sealing configuration on the related E-spool catalog model
- Designed for industrial hydraulic flow control applications

### Key Specifications
- **Manufacturer:** Bosch Rexroth
- **Model Code:** H-4WEH25HE6X/6EG24N9K4
- **Valve Series:** H-4WEH
- **Nominal Size:** NG25 / Size 25
- **Component Series:** 6X
- **Spool Designation:** HE6X (exact spool symbol requires confirmation)
- **Number of Ports:** 4 (related catalog model)
- **Number of Switching Positions:** 3 (related catalog model)
- **Actuation Type:** Pilot-operated, solenoid-controlled
- **Supply Voltage:** 24 V DC
- **Maximum Operating Pressure:** 350 bar
- **Maximum Flow Rate:** Up to 700 l/min (related catalog model)
- **Pilot Oil Supply:** External
- **Pilot Oil Return:** External
- **Mounting Type:** Subplate mounting
- **Mounting Interface:** ISO 4401-08-08-0-05
- **Electrical Connection:** 3-pole connector (2 + PE)
- **Connector Standard:** EN 175301-803
- **Seal Material:** NBR on related catalog model; confirm exact variant
- **Hydraulic Fluids:** HL, HLP, HLPD, HVLP, HVLPD, HFC (related catalog model)

FieldInstruments.in
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