Bosch Rexroth M-4SEW6Y3X/420MG125N9K4/B18V Directional Seat Valve, NG6, 420 Bar

### General
The Bosch Rexroth M-4SEW6Y3X/420MG125N9K4/B18V is a direct-operated solenoid directional seat valve designed for reliable hydraulic flow control in industrial systems. This NG6 valve features a Y-type flow configuration and a high-pressure 420 bar design rating. Its solenoid actuation, concealed manual override, and replaceable coil provide practical operation and maintenance flexibility. The integrated 1.8 mm throttle insert supports flow limitation during switching, while FKM seals provide compatibility with suitable hydraulic fluids and operating conditions.

### Features
- Bosch Rexroth direct-operated directional seat valve
- NG6 (Size 6) compact hydraulic design
- Y-type flow configuration with four main ports
- Series 3X design
- 420 bar nominal operating pressure rating
- High-power solenoid with detachable coil
- 125V voltage code configuration
- Concealed manual override (N9)
- DIN EN 175301-803 electrical connector (K4)
- Integrated 1.8 mm throttle insert (B18)
- FKM seals (V)
- Designed for industrial hydraulic flow control applications

### Key Specifications
- **Manufacturer:** Bosch Rexroth
- **Model:** M-4SEW6Y3X/420MG125N9K4/B18V
- **Valve Type:** Direct-operated directional seat valve
- **Nominal Size:** NG6 (Size 6)
- **Flow Symbol:** Y
- **Component Series:** 3X
- **Operating Pressure Code:** 420 bar
- **Solenoid Type:** High-power solenoid with detachable coil
- **Voltage Code:** G125 (125V configuration; verify electrical details against the valve nameplate)
- **Manual Override:** Concealed, N9
- **Electrical Connection:** K4, DIN EN 175301-803
- **Throttle Insert:** B18, 1.8 mm orifice
- **Seal Material:** FKM
- **Maximum Flow Rate:** Up to 25 l/min (family technical rating; operating conditions and valve symbol apply)
- **Mounting Interface:** ISO 4401-03-02-0-05 / DIN 24340 Form A
- **Application:** Industrial hydraulic systems and machinery