Product Overview
The Rexroth 4WRZE25W8-220-73/6EG24N9K31/A1D3V (material number R900948482) is a pilot-operated, two-stage proportional directional valve with electrical position feedback and integrated digital control electronics (OBE). Designed for continuous, high-dynamic control of flow direction and flow magnitude in industrial hydraulic systems, this valve features a size 25 (NG25) main stage with a W8 spool design, delivering a rated flow of approximately 220 L/min at a 10 bar (145 psi) pressure drop per metering edge. The pilot stage is a high-response proportional solenoid valve with position feedback, while the main spool is spring-centered and hydraulically actuated, ensuring precise, repeatable spool positioning proportional to the electrical command signal. With a maximum operating pressure of 350 bar (5075 psi) on the P, A, and B ports and 315 bar (4570 psi) on the T port, this valve is engineered for demanding industrial applications requiring fast response, minimal hysteresis, and excellent flow linearity. The integrated 24 VDC control electronics with N9 communication interface and K31 amplifier card compatibility enable direct interfacing with modern machine controllers, making the 4WRZE25W8-220-73/6EG24N9K31/A1D3V a robust and versatile solution for closed-loop hydraulic control systems.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Proportional Directional Valve (Pilot-Operated, Two-Stage) |
| Model Designation | 4WRZE25W8-220-73/6EG24N9K31/A1D3V |
| Material Number | R900948482 |
| Valve Size | NG25 (Size 25) |
| Spool Type | W8 (Proportional, Overlapping, Spring-Centered) |
| Rated Flow | 220 L/min at Δp = 10 bar per metering edge |
| Maximum Operating Pressure | 350 bar (P, A, B ports); 315 bar (T port) |
| Pilot Pressure | Minimum 25 bar; Maximum 315 bar |
| Electrical Supply | 24 VDC (Nominal), Integrated Control Electronics (OBE) |
| Command Signal | ±10 V or 4–20 mA (Configurable via Amplifier Card K31) |
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: Designed for dependable long-term operation in demanding industrial environments, with quality bearings and sealing systems ensuring extended maintenance intervals.
- 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 of 350 bar (P, A, B ports); 315 bar (T port) and flow rates up to 220 L/min, supporting stable operation across the full working range.
Typical Industrial Applications
The integrated 24 VDC control electronics with N9 communication interface and K31 amplifier card compatibility enable direct interfacing with modern machine controllers, making the 4WRZE25W8-220-73/6EG24N9K31/A1D3V a robust and versatile solution for closed-loop hydraulic control systems.
PRODUCT IMAGES
REXROTH 4WRZE25W8-220-73/6EG24N9K31/A1D3V / R900948482 Proportional 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.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine REXROTH 4WRZE25W8-220-73/6EG24N9K31/A1D3V / R900948482 High-Response Solenoid Directional Control Valve. This Germany-made 220V hydraulic component features a high-response pilot stage, delivering leak-free, reliable fluid control for heavy-duty industrial systems.