Product Overview
The Rexroth 4WRZE 25 W8-220-72/6EG24N9EK31/F1D3M (Material Number R900757604) is a high-response, pilot-operated proportional directional valve from the Rexroth 4WRZE series. It is engineered to control both the direction and the magnitude of flow in proportion to an electrical input signal, making it a core component in closed-loop and open-loop hydraulic control systems. The valve utilizes a two-stage design in which a proportional pilot valve actuates the main spool of a size 25 (NG25) high-flow stage, delivering precise, infinitely variable directional control with excellent dynamic response. The integrated on-board electronics (OBE) with a ±10 V or 4–20 mA command interface, combined with a position feedback loop on the main spool, ensure repeatable spool positioning and minimal hysteresis. This valve is designed for demanding industrial applications where accurate velocity, force, and position control of hydraulic actuators is required.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Proportional Directional Valve (Pilot-Operated, Two-Stage) |
| Model Designation | 4WRZE 25 W8-220-72/6EG24N9EK31/F1D3M |
| Material Number | R900757604 |
| Nominal Size | NG25 (Size 25) |
| Spool Type / Flow Characteristic | W8 — Progressive flow characteristic, closed-center spool |
| Nominal Flow at Δp = 10 bar | 220 L/min (per land, nominal) |
| Operating Pressure | Up to 350 bar (main stage, ports P/A/B); pilot stage up to 315 bar |
| Pilot Supply | Internal or external pilot oil supply, external pilot drain (port Y) |
| Actuation | Proportional solenoid with integrated on-board electronics (OBE) |
| Command Signal | ±10 V DC or 4–20 mA (factory-configured) |
| Solenoid Voltage | 24 V DC (EG24 designation) |
Engineering Features & Advantages
- Precision Performance: The integrated proportional solenoid with integrated on-board electronics (OBE) 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 OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
- Rated Capability: Rated for pressure ratings up to 350 bar and flow rates up to 220 L/min, supporting stable operation across the full working range.
Typical Industrial Applications
This valve is designed for demanding industrial applications where accurate velocity, force, and position control of hydraulic actuators is required.
PRODUCT IMAGES
Rexroth 4WRZE 25 W8-220-72/6EG24N9EK31/F1D3M / R900757604 Proportional Directional Valve
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Shop the genuine REXROTH 4WRZE 25 W8-220-72/6EG24N9EK31/F1D3M / R900757604 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.