Product Overview
The REXROTH M-3SEW6U38/630MG24N9K4 (Material Number: R900566289) is a direct-operated solenoid directional seat valve manufactured by Bosch Rexroth, engineered for leak-free load holding and precise directional control of hydraulic fluid flow in high-pressure industrial circuits. As a member of the proven 3SEW6 series, this valve utilizes a seated poppet design rather than a sliding spool, which guarantees zero internal leakage in the closed position — a critical requirement for clamping, holding, and safety-related functions. The “U38” designation indicates a nominal flow and pressure configuration rated for up to 630 bar, while the “MG24N9K4” suffix specifies a 24 V DC high-performance solenoid with a nominal 9 mm stroke, N9 (ISO 4400 / DIN 43650) electrical connection, and K4 manual override. The valve is designed for subplate mounting in accordance with ISO 4401 / DIN 24340 (NG6 / CETOP 3) interface standards, making it a direct drop-in replacement for OEM installations in demanding hydraulic power units, presses, and test rigs.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Solenoid Directional Seat Valve (Direct-Operated Poppet Type) |
| Model Designation | M-3SEW6U38/630MG24N9K4 |
| Material Number | R900566289 |
| Nominal Size | NG6 / CETOP 3 / ISO 4401-03 |
| Operating Pressure | Up to 630 bar (rated, port-dependent) |
| Solenoid Voltage | 24 V DC (MG24 high-performance wet-pin solenoid) |
| Electrical Connection | N9 — ISO 4400 / DIN 43650 connector, 3-pole + PE |
| Manual Override | K4 — concealed manual override (push-pin type) |
| Mounting & Connection | Subplate mounting, ISO 4401 / DIN 24340 NG6 interface |
| Sealing Material | NBR (standard); FKM available on request |
| Fluid Compatibility | Mineral oil HL/HL |
Engineering Features & Advantages
- Precision Performance: The solenoid directional seat valve (direct-operated poppet type) delivers precise, repeatable performance with low hysteresis and stable control across the full working range.
- Industrial Reliability: Constructed for continuous duty with durable, corrosion-resistant materials and proven engineering for maximum system uptime.
- Direct Fit Replacement: Precision-manufactured to original REXROTH specifications for direct replacement, minimising downtime and eliminating fitment issues.
- Rated Capability: Rated for pressure ratings up to 630 bar, supporting stable operation across the full working range.
Typical Industrial Applications
The REXROTH M-3SEW6U38/630MG24N9K4 (Material Number: R900566289) is a direct-operated solenoid directional seat valve manufactured by Bosch Rexroth, engineered for leak-free load holding and precise directional control of hydraulic fluid flow in high-pressure industrial circuits.
PRODUCT IMAGES

REXROTH M-3SEW6U38/630MG24N9K4 / R900566289 Solenoid Directional Seat Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine REXROTH M-3SEW6U38/630MG24N9K4 / R900566289 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.