Product Overview
The Rexroth 4WRZE16W8-150-74/6EG24N9EK31/A1D3M (material number R900750127) is a pilot-operated, two-stage proportional directional valve from the Rexroth 4WRZE series, designed for continuous, high-dynamic control of flow direction and flow magnitude in industrial hydraulic systems. The valve combines a pilot stage equipped with a proportional solenoid and a main stage with a position-controlled spool, enabling precise, stepless metering of actuator motion proportional to the electrical command signal. With an NG16 (size 16) nominal bore and a rated flow of approximately 150 L/min at a 10 bar valve pressure differential, this valve is engineered for demanding motion-control loops where accurate velocity, position, and force regulation are essential. The integrated on-board electronics (OBE) with 24 V DC solenoid actuation and central electrical connection provide fast response, repeatable hysteresis characteristics, and simplified system integration in modern industrial machinery.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Proportional Directional Valve (Pilot-Operated, Two-Stage) |
| Model Designation | 4WRZE16W8-150-74/6EG24N9EK31/A1D3M |
| Material Number | R900750127 |
| Nominal Size | NG16 (Size 16) |
| Spool Type / Flow Characteristic | W8 spool, progressive flow characteristic |
| Rated Flow | Approx. 150 L/min at Δp = 10 bar per land |
| Operating Pressure | Up to 315 bar (main stage, industrial grade) |
| Pilot Pressure | External pilot supply, typically 25–50 bar |
| Actuation | Proportional solenoid, 24 V DC (EG24) |
| Electrical Interface | Central connector with integrated on-board electronics (OBE) |
| Mounting & Connection | Subplate mounting per ISO 4401 / DIN 24340, NG16 interface |
Engineering Features & Advantages
- Precision Performance: The integrated proportional solenoid, 24 V DC (EG24) ensures precise, repeatable control with low hysteresis and stable performance 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 315 bar and flow rates up to 150 L/min, supporting stable operation across the full working range.
Typical Industrial Applications
The integrated on-board electronics (OBE) with 24 V DC solenoid actuation and central electrical connection provide fast response, repeatable hysteresis characteristics, and simplified system integration in modern industrial machinery.
PRODUCT IMAGES

Rexroth 4WRZE16W8-150-74/6EG24N9EK31/A1D3M / R900750127 Proportional Directional 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 4WRZE16W8-150-74/6EG24N9EK31/A1D3M / R900750127 High-Response Solenoid Directional Control Valve. This Germany-made 24V DC hydraulic component features a high-response pilot stage, delivering leak-free, reliable fluid control for heavy-duty industrial systems.