Product Overview
The Rexroth PR4-30/8.00-700RA01M08 (Material Number: R901088960) is a high-performance, pilot-operated proportional pressure reducing valve designed for precise, continuous electrical control of secondary system pressures. As part of the Rexroth PR4 series, this valve is engineered to reduce a primary inlet pressure to a regulated, infinitely variable outlet pressure proportional to the electrical command signal supplied to its integrated proportional solenoid. Unlike standard directional or switching valves, the PR4 series is specifically designed for pressure regulation tasks where accurate, dynamic response and low hysteresis are critical. The valve features a robust housing and a precision-machined spool, ensuring reliable operation in demanding industrial environments. The model code PR4-30/8.00-700RA01M08 indicates a nominal size 30 interface, a maximum regulated pressure of 700 bar (based on the “700” designation), and a specific solenoid/control variant (RA01M08). This component is essential in hydraulic systems requiring smooth pressure ramping, load compensation, or precise force control, such as in testing rigs, injection molding machines, and metallurgical equipment.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Proportional Pressure Reducing Valve (Pilot Operated) |
| Model Designation | PR4-30/8.00-700RA01M08 / R901088960 |
| Operating Pressure | Up to 700 bar (Secondary Pressure Rating) |
| Nominal Size | NG30 (Size 30 Interface) |
| Actuation Type | Proportional Solenoid with Integrated Position Feedback (RA01M08) |
| Mounting & Connection | Standard ISO 4401 / Subplate Mounting Interface |
| Control Signal | Analog Voltage/Current (Standard Industrial Proportional Control) |
Engineering Features & Advantages
- Precision Pressure Regulation: The valve utilizes a pilot-operated spool design with a proportional solenoid to deliver highly accurate pressure control with minimal hysteresis and excellent repeatability, essential for closed-loop pressure control systems.
- High-Pressure Capability: With a rated secondary pressure of up to 700 bar, this valve is suitable for high-pressure industrial applications where standard valves would fail, ensuring system integrity under extreme loads.
- Dynamic Response: The integrated position feedback (RA01M08 variant) ensures fast and stable response to command signal changes, minimizing pressure overshoot and enabling smooth ramping profiles.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, featuring a robust housing and wear-resistant spool and sleeve assembly for long service life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth OEM standards, ensuring drop-in replacement without modification to existing manifolds or control systems.
Typical Industrial Applications
This proportional pressure reducing valve is ideally suited for heavy industrial scenarios requiring precise pressure control, including: plastic injection molding machines (for clamping and injection pressure control), metallurgical presses (for forging and stamping force regulation), construction and marine hydraulics (for load sensing and pressure
PRODUCT IMAGES
Rexroth PR4-30/8.00-700RA01M08 / R901088960 Proportional Pressure Reducing Valve
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Shop the genuine Rexroth PR4-30/8.00-700RA01M08 / R901088960 Proportional Pressure Reducing Valve. This Germany-made 24 VDC hydraulic component features a pilot-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.