Product Overview
The Rexroth 4WRZE 10 W8-85-72/6EG24N9ETK31/F1D3M (Material No. R900724781) is a high-response, pilot-operated proportional directional valve from the Rexroth 4WRZE series, designed for precise, continuous control of flow direction and magnitude in industrial hydraulic systems. Utilizing a two-stage design with a pilot valve and main spool, this valve features integrated position feedback of the main spool via an inductive position transducer, ensuring exceptional control accuracy and dynamic response. The “W8” spool type provides a specific flow characteristic optimized for demanding applications requiring fine metering and high repeatability. With a nominal size of NG10 (size 10) and a maximum flow capacity of 85 L/min at a pressure drop of 10 bar per land, this valve is engineered to deliver reliable, proportional control in open-loop or closed-loop systems. The integrated 24 V DC solenoid (EG24) with N9 (EN 175301-803, ISO 4400) connector and the “ET” feature (integrated electronics with external command signal) simplifies integration into modern control architectures. The “K31” designation indicates a specific spool position monitoring and feedback configuration, while “F1D3M” defines the seal material (FKM) and other options. This valve is a direct-fit replacement for OEM systems and is ideal for applications demanding high precision, fast response, and robust industrial reliability.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Proportional Directional Valve (Pilot-Operated, Two-Stage) |
| Model Designation | 4WRZE 10 W8-85-72/6EG24N9ETK31/F1D3M |
| Material Number | R900724781 |
| Nominal Size | NG10 (Size 10) |
| Spool Type | W8 (Proportional, closed-center, with specific flow characteristic) |
| Max. Flow Rate | 85 L/min (at Δp = 10 bar per land) |
| Operating Pressure | Up to 315 bar (pilot and main stage, depending on port) |
| Pilot Pressure | Minimum 20 bar; maximum 315 bar |
| Control Signal | External command via integrated electronics (ET), 0 to ±10 V or 4 to 20 mA (configurable) |
| Solenoid Voltage | 24 V DC (EG24) |
Engineering Features & Advantages
- Precision Performance: The proportional directional valve (pilot-operated, two-stage) delivers precise, repeatable performance with low hysteresis and stable control across the full working range.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction and wear-resistant internal components for extended service life.
- 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 85 L/min, supporting stable operation across the full working range.
Typical Industrial Applications
This valve is a direct-fit replacement for OEM systems and is ideal for applications demanding high precision, fast response, and robust industrial reliability.
PRODUCT IMAGES
Rexroth 4WRZE 10 W8-85-72/6EG24N9ETK31/F1D3M / R900724781 Proportional Directional Valve
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Shop the genuine REXROTH 4WRZE 10 W8-85-72/6EG24N9ETK31/F1D3M / R900724781 Proportional Directional Control Valve. This Germany-made 24V DC hydraulic component features a 4-way, 3-position design with integrated electronics, delivering leak-free, reliable fluid control for heavy-duty industrial systems.