Product Overview
The Rexroth 4WEH16 E 7X/6E G24 N9ETK4/B10 (Material No. R900923971) is a high-performance electro-hydraulic directional spool valve from the proven Rexroth 4WEH series, size NG16 (Cetop 7 / ISO 4401-07). This pilot-operated, two-stage valve utilizes a solenoid-actuated pilot valve to control the main spool, enabling reliable switching of high flow rates with minimal electrical power. The “E” spool configuration provides a closed-center, all-ports-blocked function in the de-energized state, ensuring safe load holding and precise directional control of hydraulic actuators. Designed for demanding industrial duty, this valve is a direct-fit replacement for OEM Rexroth installations and is engineered for continuous operation in high-pressure hydraulic systems.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Electro-Hydraulic Directional Control Valve (Pilot-Operated Spool Valve) |
| Model Designation | 4WEH16 E 7X/6E G24 N9ETK4/B10 |
| Material Number | R900923971 |
| Size / Nominal Diameter | NG16 (Cetop 7 / ISO 4401-07) |
| Spool Type | Type E — Closed Center (All Ports Blocked in De-Energized State) |
| Actuation | Electro-Hydraulic, Solenoid Pilot Operated (Wet-Pin AC/DC Solenoid) |
| Solenoid Voltage | 24 V DC (G24) |
| Operating Pressure | Up to 350 bar (Working Ports A/B/P); Pilot Pressure up to 250 bar |
| Nominal Flow Rate | Up to 300 L/min (dependent on spool and pressure differential) |
| Mounting & Connection | Subplate Mounting per ISO 4401-07 / Cetop 7; DIN 24 V DC Connector |
| Seal Material | NBR (Nitrile) — Standard Industrial Hydraulic Fluid Compatibility |
Engineering Features & Advantages
- Precision Performance: The integrated electro-Hydraulic, Solenoid Pilot Operated (Wet-Pin AC/DC Solenoid) ensures precise, repeatable control with low hysteresis and stable performance across the full working range.
- Rated Capability: Rated for pressure ratings up to 350 bar and flow rates up to 300 L/min, supporting stable operation across the full working range.
- High-Flow Two-Stage Design: The pilot-operated main stage is built for high flow capacity — suited to directional control of large actuators, presses and power units.
- Low-Power Pilot Control: The pilot solenoid (24 V DC) with the standard N9 / K4 interface matches conventional machine control cabinets.
Typical Industrial Applications
Designed for demanding industrial duty, this valve is a direct-fit replacement for OEM Rexroth installations and is engineered for continuous operation in high-pressure hydraulic systems.
Understanding the Model Code: 4WEH16 E 7X/6E G24 N9ETK4/B10
Each block of the Rexroth model code describes one attribute of the valve. Use this breakdown together with the specification table above to confirm the exact configuration you need:
| Code Block | Meaning |
|---|---|
| 4WEH16 | Electro-Hydraulic Directional Control Valve (Pilot-Operated Spool Valve) — NG16 (ISO 4401 / DIN 24340) |
| Spool H16 | Spool type H16 — metering and centre condition for this variant are listed in the specification table |
| G24 | Solenoid — 24 V DC |
| N9 | Concealed manual override (push-pin type) |
| K4 | Plug connector to DIN EN 175301-803 (ISO 4400) |
Always verify the complete code and material number against the nameplate on your existing valve before ordering — body size, spool type and coil voltage must all match.
Choosing the Right Variant
This is a two-stage, pilot-operated valve for high-flow main circuits. The small pilot solenoid controls the large main stage, so switching power stays low while flow capacity rises. Confirm the pilot oil arrangement (internal or external) for your circuit before ordering — send us your complete model code if you are unsure. Related listings:
- Rexroth 4WEH16E1X/6HG24N9ETK4/B10 / R901531080 Electro-Hydraulic Directional Valve
- Rexroth 4WEH16J1X/6HG24N9ETK4/B10 / R901531099 Electro-Hydraulic Directional Valve
Frequently Asked Questions
Why is this a pilot-operated (two-stage) valve?
Pilot operation lets a small solenoid actuate a large main spool — the standard solution for high flow rates with low electrical power, used for the main directional control of large actuators and presses.
What should I check before ordering?
Confirm the complete code and material number (see nameplate) on your nameplate, and verify the pilot oil supply arrangement (internal vs external) for your circuit.
What do N9 and K4 mean?
N9 = concealed manual override on the pilot valve; K4 = plug connector to DIN EN 175301-803 (ISO 4400).
Is the coil voltage important?
Yes — this unit uses a 24 V DC pilot solenoid, and the coil must match your control circuit.
PRODUCT IMAGES
Rexroth 4WEH16 E 7X/6E G24 N9ETK4/B10 / R900923971 Electro-Hydraulic Directional 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 4WEH16 E 7X/6E G24 N9ETK4/B10 / R900923971 Solenoid Directional Spool Valve. This German-made 24V DC hydraulic component features a pilot-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.
