Product Overview
The Rexroth 3DREPE 6B-21/45EG24N9K31/A1V (Material Number R900925013) is a direct-operated, three-way proportional pressure reducing valve designed for precise, infinitely variable pressure control in industrial hydraulic systems. Manufactured by Bosch Rexroth, this valve belongs to the proven 3DREPE series, which utilizes a proportional solenoid to actuate a control spool against a compression spring, enabling stepless adjustment of the reduced outlet pressure in proportion to the electrical command signal. The valve is configured for reducing pressure in one consumer line (port A) while simultaneously allowing excess flow to return to tank (port T), making it ideal for systems requiring accurate pressure regulation independent of load fluctuations. With a nominal size of 6 (NG6 / CETOP 3 / ISO 4401-03), this valve is engineered for subplate mounting and delivers reliable performance in demanding industrial environments.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Proportional Pressure Reducing Valve (Three-Way, Direct-Operated) |
| Model Designation | 3DREPE 6B-21/45EG24N9K31/A1V |
| Material Number | R900925013 |
| Nominal Size | NG6 (CETOP 3 / ISO 4401-03) |
| Operating Pressure | Up to 315 bar (system pressure, port P) |
| Secondary Pressure Range | Up to 45 bar (reduced pressure, port A) |
| Nominal Flow Rate | Up to 30 L/min (dependent on pressure differential) |
| Actuation Type | Proportional Solenoid with Central Thread and Detachable Coil |
| Electrical Supply | 24 V DC (EG24 designation) |
| Electrical Connector | K31 – DIN EN 175301-803 (ISO 4400) 3-pole + PE, with integrated rectifier |
| Mounting & Connection | Subplate mounting per ISO 4401-03-02-0-05 (CETOP 3) |
Engineering Features & Advantages
- Precision Performance: The proportional pressure reducing valve (three-way, direct-operated) 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: 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 30 L/min, supporting stable operation across the full working range.
Typical Industrial Applications
With a nominal size of 6 (NG6 / CETOP 3 / ISO 4401-03), this valve is engineered for subplate mounting and delivers reliable performance in demanding industrial environments.
PRODUCT IMAGES
Rexroth 3DREPE 6B-21/45EG24N9K31/A1V / R900925013 Proportional Pressure Reducing Valve
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Shop the genuine Rexroth 3DREPE 6B-21/45EG24N9K31/A1V / R900925013 Proportional Directional Valve. This Germany-made 24 VDC hydraulic component features a 3-way proportional design with integrated electronics, delivering leak-free, reliable fluid control for heavy-duty industrial systems.