Product Overview
The Rexroth 4WEH16J72/6EG24N9ETS2K4/B10 (Material No. R900929900) is a high-performance electro-hydraulic directional spool valve from the proven Rexroth 4WEH series, size NG16 (nominal flow up to 300 L/min). It operates on a two-stage pilot principle: a solenoid-actuated pilot valve (wet-pin DC solenoid, 24 V) controls the main spool of the size 16 valve via pilot pressure, enabling reliable, high-flow directional control with minimal electrical power. The main spool is spring-centered to the middle position and features a “J” type spool configuration, providing defined flow paths and blocked-port characteristics for precise actuator control. This valve is engineered for demanding industrial hydraulic systems requiring fast, repeatable switching of high flows at pressures up to 350 bar, and is a direct-fit replacement for OEM Rexroth installations.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Electro-Hydraulic Directional Spool Valve (Pilot-Operated, Two-Stage) |
| Model Designation | 4WEH16J72/6EG24N9ETS2K4/B10 |
| Material / Order Number | R900929900 |
| Nominal Size | NG16 (DIN 24340 / ISO 4401 size 16) |
| Spool Type | Type “J” spool, spring-centered middle position |
| Operating Pressure | Up to 350 bar (main stage, industrial grade) |
| Nominal Flow Rate | Up to 300 L/min (NG16) |
| Pilot Valve Actuation | Wet-pin DC solenoid, 24 V DC (EG24) |
| Electrical Connection | N9 — standard DIN EN 175301-803 (ISO 4400) plug connector |
| Pilot Supply | Internal pilot oil supply (ETS configuration) |
| Mounting & Connection | Subplate mounting per ISO 4401 / DIN 24340, 4-way (P, T, A, B) |
Engineering Features & Advantages
- Precision Performance: The electro-hydraulic directional spool valve (pilot-operated, two-stage) delivers precise, repeatable performance with low hysteresis and stable control 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 controls up to 300 L/min in NG16 size — suited to directional control of large actuators, presses and power units.
- Low-Power 24 V DC Pilot: The EG24 wet-pin pilot solenoid (24 V DC) with the standard N9 / K4 interface matches conventional machine control cabinets.
Typical Industrial Applications
This valve is engineered for demanding industrial hydraulic systems requiring fast, repeatable switching of high flows at pressures up to 350 bar, and is a direct-fit replacement for OEM Rexroth installations.
Understanding the Model Code: 4WEH16J72/6EG24N9ETS2K4/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 | Pilot-operated two-stage directional spool valve — nominal size NG16 (DIN 24340 / ISO 4401) |
| J72 | Spool type J — spring-centred centre position (series 72 variant) |
| 6EG24 | Component series 60; pilot valve with wet-pin DC solenoid — 24 V DC |
| N9 | Concealed manual override on the pilot valve |
| ETS2K4 | ETS = internal pilot oil supply; 2 = design variant; K4 = plug connector to DIN EN 175301-803 (ISO 4400) |
| B10 | Design / seal variant — confirm on the nameplate |
| R900929900 | Rexroth material (order) number |
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 NG16 valve for high-flow main circuits (up to 300 L/min in this size). The small EG24 solenoid (24 V DC) controls the large main stage, so switching power stays low while flow capacity rises. The ETS internal pilot supply takes pilot oil from the main P port; if your circuit requires external pilot oil, send us the full model code and we will confirm the correct variant. Related listings:
- 4WEH16J1X/6HG24N9ETK4/B10 (J spool, 24 V DC high-power pilot) — R901531099
- 4WEH16 E-7X/6E-G24-N9ETK4/B10 — R900923971
Frequently Asked Questions
Why is this a two-stage (pilot-operated) valve?
Pilot operation lets a small 24 V DC solenoid actuate a large main spool — the standard solution for high flow rates (NG16: up to 300 L/min) with low electrical power.
What does ETS mean in the model code?
ETS denotes the internal pilot oil supply: pilot pressure is taken from the main P port, so no separate pilot line is required in most standard circuits.
What do N9 and K4 mean?
N9 = concealed manual override on the pilot valve; K4 = plug connector to DIN EN 175301-803 (ISO 4400).
What should I check before ordering?
Confirm the full code and material number (R900929900) on your nameplate, and confirm that your machine uses internal pilot supply (ETS). The mounting pattern is ISO 4401 NG16.
PRODUCT IMAGES
Rexroth 4WEH16J72/6EG24N9ETS2K4/B10 / R900929900 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 4WEH16J72/6EG24N9ETS2K4/B10 / R900929900 Solenoid Directional Spool Valve. This Germany-made 24V DC hydraulic component features a robust spool design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.
