Description
1. Overview of Modulating Electric Actuator
VTON modulating electric actuators are versatile devices designed for controlling rotary valves such as butterfly, ball, and damper valves with 0° to 270° movement. They are widely used in industries such as petrochemicals, water treatment, shipbuilding, and power generation. Powered by single-phase or three-phase AC power, they accept 4-20mA or 0-10V control signals for seamless integration into automated systems.
Applications:
- Oil and gas pipelines
- Chemical processing plants
- Water and wastewater treatment
- Power generation
- HVAC and shipbuilding
2. Technical Parameters
- Maximum Output Torque: 200-400Nm
- Action Time (90°): 30 seconds
- Motor Type: Squirrel cage asynchronous motor
- Power Supply:
- Single-phase: 110/220V AC
- Three-phase: 380/440V AC (50/60Hz, ±10%)
- Control Signals: Input/output 4-20mA
- Limit Switches:
- Standard: 2 x ON/OFF SPDT (250V AC, 10A)
- Auxiliary: 2 x ON/OFF SPDT (250V AC, 10A)
- Angle of Travel: 90° ± 10° (Optional: 180° or 270°)
- Overheat Protection: Built-in, activates at 120°C ± 5°C, resets at 97°C ± 5°C
- Manual Operation: Mechanical handwheel
- Self-Locking Device: Worm gear mechanism
- Environmental Temperature: -25°C to +70°C (optional: -30°C, -40°C, -60°C)
- Ingress Protection: IP67 (Optional: IP68)
- Weight: Customizable based on specifications
3. Key Features
- Durable Construction: Hard aluminum alloy housing with anodized coating and polyester powder finish, offering high corrosion resistance.
- High Precision Control: Accepts 4-20mA or 0-10V signals for accurate valve positioning.
- Integrated Safety Features: Built-in overheat protection, self-locking worm gear mechanism, and dual limit switches ensure reliable operation.
- User-Friendly Design:
- Manual handwheel for emergency operation
- Position indicator with a convex lens for clear visibility
- Dual installation options (vertical or horizontal)
- Moisture Protection: Equipped with a 30W anti-condensation heater to maintain internal dryness.
- Flexible Mounting: ISO5211/DIN3337 standard-compliant base for easy installation on a wide range of valves.
4. Selection Guidelines
When selecting a modulating electric actuator:
- Determine the torque requirements of the valve and add a safety margin based on the operating medium.
- Match the actuator’s torque, control signals, and environmental conditions to your application requirements.
- For applications with extreme temperatures or hazardous environments, choose models with enhanced protection (e.g., IP68 or extended temperature ranges).
