Proportional valve
Proportional valves are precision control devices used in fluid power systems to regulate flow rate, pressure, or direction proportionally to an input signal. These valves offer superior performance compared to traditional on/off valves, allowing for smooth and accurate control in various industrial applications.
Key Features of Our Proportional Valves
- High-precision control with ±1% accuracy
- Wide operating pressure range: up to 350 bar
- Flow rates from 2 l/min to 600 l/min available
- Multiple electrical interfaces: 4-20mA, 0-10V, CANopen
- Built-in position feedback for closed-loop control
- IP65 protection class for harsh environments
Technical Specifications
| Model | Max Pressure (bar) | Flow Range (l/min) | Response Time (ms) | Hysteresis (%) |
|---|---|---|---|---|
| PV-100 | 210 | 5-100 | 30 | ≤1.5 |
| PV-200 | 350 | 10-250 | 25 | ≤1.2 |
| PV-300 | 350 | 20-600 | 20 | ≤1.0 |
Common Applications
- Hydraulic press control systems
- Plastic injection molding machines
- Mobile hydraulic equipment
- Test bench applications
- Industrial automation systems
Proportional Valve FAQ
Q: What is the main advantage of using a proportional valve over conventional valves?
A: Proportional valves provide infinitely variable control between fully open and fully closed positions, allowing precise regulation of flow or pressure. This results in smoother operation, better process control, and energy savings compared to traditional on/off valves that only offer two positions.
Q: How do I select the right proportional valve for my application?
A: Consider these key factors: required flow rate at operating pressure, type of fluid (oil, water, etc.), necessary response time, control signal type (analog, digital), environmental conditions, and whether position feedback is needed. Our technical team can help with sizing calculations based on your specific parameters.
Q: What maintenance is required for proportional valves?
A: Regular maintenance includes checking for proper fluid filtration (recommended 5 µm or better), inspecting electrical connections, verifying operation through periodic testing, and replacing seals every 2-3 years depending on operating conditions. Always use clean hydraulic fluid and maintain proper contamination control.
Advanced Features
- Programmable response curves for application-specific tuning
- Diagnostic capabilities for predictive maintenance
- Fail-safe options available (spring return or holding position)
- Customizable mounting configurations
- Optional integrated pressure compensation
Our proportional valves are designed for reliability and long service life in demanding applications. With over 20 standard models and custom engineering capabilities, we can provide the perfect solution for your hydraulic or pneumatic control requirements.