Product Overview
The Woodward VUM-U937A/EH is a high-performance electro-hydraulic proportional directional valve engineered for precise flow and directional control in demanding industrial hydraulic systems. As part of Woodward’s renowned VUM series, this valve utilizes a robust proportional solenoid actuator coupled with a precision-machined spool and sleeve assembly to deliver infinitely variable flow control proportional to the electrical input signal. The VUM-U937A/EH is designed to interface seamlessly with modern proportional amplifier cards and closed-loop control systems, making it an ideal choice for applications requiring accurate velocity, position, and force regulation. Its electro-hydraulic actuation principle ensures fast dynamic response, minimal hysteresis, and excellent repeatability, positioning it as a critical component in advanced motion control architectures across industries such as plastic injection molding, metallurgical processing, and heavy-duty CNC machinery.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Electro-Hydraulic Proportional Directional Valve |
| Model Designation | VUM-U937A/EH |
| Operating Pressure | Standard Industrial Grade (Up to 315 bar rated) |
| Mounting & Connection | Standard ISO 4401 / CETOP Interface |
| Actuation Method | Proportional Solenoid with Integrated Position Feedback |
| Spool Configuration | 4-Way, 3-Position, Closed-Center (Standard) |
| Flow Capacity | Up to 120 L/min (dependent on pressure differential) |
| Hysteresis | < 3% (typical, with dither optimization) |
| Response Time | < 30 ms (step response, 0 to 100% signal) |
| Electrical Input | Proportional Current (0–800 mA typical) / Voltage Command |
| Fluid Compatibility | Mineral Oil (HLP/HLVP), Synthetic Fluids (on request) |
| Seal Material | NBR / FKM (High-Temperature Option) |
Engineering Features & Advantages
- Precision Performance: The electro-hydraulic proportional directional valve 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: Exact dimensional and functional compatibility with original WOODWARD standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
The VUM-U937A/EH is designed to interface seamlessly with modern proportional amplifier cards and closed-loop control systems, making it an ideal choice for applications requiring accurate velocity, position, and force regulation.
PRODUCT IMAGES
WOODWARD VUM-U937A/EH Electro-Hydraulic 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 WOODWARD VUM-U937A/EH Proportional Directional Valve. This Germany-made 24V DC hydraulic component features a high-response proportional design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.