Woodward 8405-809 Electric Valve Actuator

Applications

The Woodward 8405-809 Electric Valve Actuator is designed for precise and reliable actuation of valves in turbines, engines, and industrial process systems. Typical applications include:

• Controlling steam, gas, and hydraulic turbine inlet/outlet valves.
• Industrial engines requiring accurate valve positioning for load, speed, or pressure regulation.
• Integration with Woodward digital or servo controllers for automated process control.
• Compact systems where space constraints demand small-form-factor actuators.
• Retrofitting legacy valve systems with modern electric actuation for improved control.

By ensuring accurate valve positioning, the 8405-809 enhances turbine performance, safety, and process efficiency.y.

Advantages

• High Precision Valve Control: Accurate and repeatable actuation ensures reliable process operation.
• Compact and Lightweight: 1.5 kg unit with a 200 × 25 × 120 mm form factor allows flexible mounting.
• Robust Industrial Design: Resistant to vibration, shock, and temperature extremes.
• Integration-Friendly: Seamlessly compatible with Woodward controllers and supervisory systems.
• Maintenance-Friendly: Modular design and simplified electrical connections reduce installation and service time. 

Technical FAQs

1. Which valves can it actuate?
   Rotary or linear valves used in turbines, engines, and industrial process systems.
2. What type of input signals does it accept?
   Digital and analog signals from Woodward controllers or industrial automation systems.
3. What is the actuation range?
   Configurable depending on mechanical linkage, typically up to ±90°.
4. How fast is the response time?
   Less than 150 milliseconds, suitable for dynamic control applications.
5. Is it suitable for high-vibration environments?
   Yes, designed to maintain accurate positioning under vibration and shock.
6. Can it operate in high temperatures?
   Continuous operation up to 60°C (140°F).
7. Does it support fail-safe operation?
   Yes, configurable fail-open, fail-closed, or hold-last-position modes.
8. Is installation and maintenance straightforward?
   Yes, standard mounting brackets and modular wiring simplify setup.
9. Can it integrate with SCADA or HMI systems?
   Yes, provides position and status feedback compatible with supervisory systems.
10. Does it provide diagnostic features?
    When paired with controllers, it supports fault detection, position monitoring, and event logging.