Product Overview
The Rexroth 4WEH16 J7X/6EG24N9ETSK4/B10 (Material No. R900931115) is a pilot-operated, electro-hydraulic directional spool valve from the proven Rexroth 4WEH series, size NG16 (Cetop 7 / ISO 4401-07). It is a two-stage design in which a solenoid-actuated pilot valve (wet-pin DC solenoid, 24 V) controls the main spool of the size 16 valve via pilot pressure, allowing the main stage to switch high flow rates with minimal actuating force. The main spool is spring-centered to the middle position and returns automatically when the solenoids are de-energized. The “J7X” designation identifies the high-pressure version of the 4WEH16 series (up to 350 bar working pressure), while the “6EG24N9ETSK4” pilot valve code specifies a 24 V DC solenoid with manual override, an integrated throttle/check arrangement in the pilot supply, and a spring return. The valve is used to start, stop, and reverse the direction of hydraulic flow in industrial power units, providing reliable directional control of cylinders and motors in demanding continuous-duty applications.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pilot-Operated Electro-Hydraulic Directional Spool Valve (2-stage) |
| Model Designation | 4WEH16 J7X/6EG24N9ETSK4/B10 |
| Material Number | R900931115 |
| Nominal Size | NG16 (Cetop 7 / ISO 4401-07-08-0-05) |
| Spool Type | Type J — open-center / tandem configuration per Rexroth spool coding |
| Operating Pressure | Up to 350 bar (main stage, J7X high-pressure version); pilot pressure per 4WEH16 series data |
| Nominal Flow Rate | Approx. 300 L/min (NG16 main stage, depending on spool and pressure drop) |
| Pilot Valve Actuation | Wet-pin DC solenoid, 24 V DC (code EG24), with manual override (N9) |
| Pilot Supply | Internal or external pilot oil supply (ET configuration), with throttle/check insert (TSK4) |
| Return / Centering | Spring-centered main spool, spring return pilot valve |
Engineering Features & Advantages
- Precision Performance: The pilot-operated electro-hydraulic directional spool valve (2-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 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
The valve is used to start, stop, and reverse the direction of hydraulic flow in industrial power units, providing reliable directional control of cylinders and motors in demanding continuous-duty applications.
Understanding the Model Code: 4WEH16 J7X/6EG24N9ETSK4/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 Electro-Hydraulic Directional Spool Valve (2-stage) — NG16 (Cetop 7 / ISO 4401-07-08-0-05) |
| Spool H16 | Spool type H16 — metering and centre condition for this variant are listed in the specification table |
| EG24 | Solenoid — 24 V DC |
| 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 4WEH16J7X/6EG24N9ETK4/B10 / R900930431 Electro-Hydraulic Directional Valve
- Rexroth 4WEH16J72/6EG24N9ETS2K4/B10 / R900929900 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 J7X/6EG24N9ETSK4/B10 / R900931115 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.
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- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine REXROTH 4WEH16 J7X/6EG24N9ETSK4/B10 / R900931115 Solenoid Directional Spool Valve. This Germany-made 24V DC hydraulic component features a pilot-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.
