Product Overview
The Rexroth M-3SEW10C16/630MG24N9K4 (Material Number: R900049870) is a direct-operated solenoid directional seat valve designed for reliable shut-off, release, and directional control of hydraulic fluid flow in high-pressure industrial circuits. As a member of the Rexroth M-3SEW series, this valve operates on a poppet (seat) principle rather than a sliding spool, providing virtually leak-free sealing in the closed position. The “C16” designation indicates a nominal flow capacity of 16 L/min, while the “630” rating confirms a maximum operating pressure of 630 bar, making it suitable for demanding high-pressure applications. The integrated 24 V DC solenoid (MG24N9K4) enables precise electrical actuation, and the N9 designation indicates a standard manual override for emergency operation. This valve is engineered as a direct fit replacement for OEM Rexroth systems and is widely deployed in industrial hydraulic power units, presses, and test stands where dependable high-pressure isolation is critical.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Directional Seat Valve (Solenoid Actuated) |
| Model Designation | M-3SEW10C16/630MG24N9K4 |
| Material Number | R900049870 |
| Nominal Flow Rate | 16 L/min (C16 designation) |
| Maximum Operating Pressure | Up to 630 bar (P, A, B ports) |
| Solenoid Voltage | 24 V DC (MG24 designation) |
| Manual Override | Integrated (N9 designation) |
| Design Principle | Direct-operated poppet / seat type, spring return |
| Mounting & Connection | Standard ISO / Rexroth subplate interface, NG10 (CETOP 5) |
| Seal Material | NBR (N9 designation), suitable for mineral oil based hydraulic fluids |
Engineering Features & Advantages
- Leak-Free Seat Design: The poppet-and-seat construction delivers near-zero internal leakage in the closed position, ensuring reliable load holding and pressure isolation in high-pressure circuits.
- High-Pressure Capability: Rated to 630 bar, this valve is engineered for the most demanding industrial hydraulic systems where standard spool valves would be unsuitable.
- Industrial Reliability: Designed for dependable long-term operation in demanding industrial environments, with quality bearings and sealing systems ensuring extended maintenance intervals.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original REXROTH standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
This valve is engineered as a direct fit replacement for OEM Rexroth systems and is widely deployed in industrial hydraulic power units, presses, and test stands where dependable high-pressure isolation is critical.
PRODUCT IMAGES

REXROTH M-3SEW10C16/630MG24N9K4 / R900049870 Solenoid Directional Seat Valve
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- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
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- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine REXROTH M-3SEW10C16/630MG24N9K4 / R900049870 Solenoid Directional Spool Valve. This Germany-made 24V DC hydraulic component features a reliable spool design, delivering leak-free, precise fluid control for heavy-duty industrial systems.