Product Overview
The Rexroth 4WRZE16W8-150-74/6EG24N9ETK31/A1D3M (Material No. R900700633) is a high-response, pilot-operated proportional directional valve from the Rexroth 4WRZE series, size NG16 (CETOP 7 / ISO 4401-07). It is engineered to control both the direction and the magnitude of flow in proportion to an electrical input signal, making it the central control element in demanding electro-hydraulic motion and velocity control loops. The valve combines a pilot stage with a spring-centered, spring-return main spool, actuated by a proportional solenoid with central electrical connection. The “W8” spool type provides a specific metering characteristic (progressive flow gain with defined overlap), while the “150” designation indicates a nominal flow of 150 L/min at a 10 bar (Δp) valve pressure drop per land. The integrated “A1D3M” configuration includes an amplifier/control electronics interface and monitoring options, enabling closed-loop position, velocity, or force control when paired with an external or on-board control amplifier. This valve is a direct-fit, OEM-compatible replacement for the original Rexroth part number R900700633, ensuring identical mounting, porting, and performance characteristics.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Proportional Directional Valve (Pilot-Operated, 4-Way, 3-Position) |
| Model Designation | 4WRZE16W8-150-74/6EG24N9ETK31/A1D3M |
| Material Number | R900700633 |
| Nominal Size | NG16 (CETOP 7 / ISO 4401-07-04-0-05) |
| Spool Type / Flow Characteristic | W8 — Progressive flow gain, defined overlap, symmetric metering |
| Nominal Flow Rate | 150 L/min (at Δp = 10 bar per metering land) |
| Operating Pressure | Up to 315 bar (P, A, B ports); 250 bar (T port) — standard industrial grade |
| Pilot Pressure | External or internal pilot supply, typically 25–50 bar above tank pressure |
| Actuation | Proportional solenoid, single or dual, with central electrical connection (EG24) |
Engineering Features & Advantages
- Precision Performance: The integrated proportional solenoid, single or dual, with central electrical connection (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: Exact dimensional and functional compatibility with original Rexroth standards, allowing straightforward retrofit into existing hydraulic systems without rework.
- 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
This proportional directional valve (pilot-operated, 4-way, 3-position) is widely used in industrial hydraulic power units, machine tools, presses, and general automation systems where reliable, precise performance is required.
PRODUCT IMAGES
Rexroth 4WRZE16W8-150-74/6EG24N9ETK31/A1D3M / R900700633 Proportional Directional Valve
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Shop the genuine REXROTH 4WRZE16W8-150-74/6EG24N9ETK31/A1D3M / R900700633 Proportional Directional Control Valve. This Germany-made 24 VDC hydraulic component features a pilot-operated design with integrated electronics, delivering leak-free, reliable fluid control for heavy-duty industrial systems.