Woodward 8235-639 Throttle Valve

The Woodward 8235-639 Throttle Valve is a precision-engineered electro-mechanical device designed to regulate the flow of air or fuel-air mixtures in engine and turbine systems. Specifically developed for industrial engines and generator applications, the 8235-639 model offers accurate throttling capabilities, ensuring optimal performance, fuel efficiency, and emissions control.

Crafted from rugged materials and engineered to meet the demands of harsh environments, this throttle valve integrates seamlessly with Woodward’s digital control systems, such as governors and actuators. It functions as a key element in closed-loop control systems by responding precisely to input signals and positioning commands, thereby maintaining engine speed and load stability.

With its proven reliability and performance consistency, the 8235-639 is used extensively in industries such as power generation, oil & gas, transportation, and industrial automation.

Product Specifications

Product Applications

The Woodward 8235-639 Throttle Valve is suitable for a variety of demanding applications where controlled airflow or fuel-air mixture regulation is essential. Key application areas include:

1. Gas and Diesel Generators

   Provides accurate air regulation to support stable combustion and optimize engine performance.

2. Industrial Engines

   Used in manufacturing plants, mining operations, and compressor drives for load-based engine modulation.

3. Turbine Control Systems

   Regulates airflow in gas turbine applications in power generation and process industries.

4. Cogeneration (CHP) Units

   Ensures balanced airflow and emissions control in combined heat and power systems.

5. Marine Propulsion Systems

   Maintains consistent engine response in variable-speed maritime environments.

6. Test and Simulation Benches

   Supports precise airflow control in engine test environments and simulation rigs.

Product Advantages

The 8235-639 Throttle Valve delivers operational excellence and control versatility in critical systems:

1. Precision Throttling

   Supports exact valve positioning for fine airflow regulation based on real-time engine demands.

2. Fast Response

   Actuates in under 100 ms, ensuring quick reaction to load or speed changes.

3. High Reliability

   Built with corrosion-resistant materials and IP-rated sealing for longevity in harsh conditions.

4. Seamless Integration

   Designed to work with Woodward’s governors, controllers, and actuators without custom adaptation.

5. Wide Compatibility

   Suitable for a broad range of engines and fuels, including bi-fuel, diesel, and natural gas systems.

6. Diagnostic Feedback

   Offers position sensing and fault reporting for predictive maintenance and system protection.

7. Customizable Flow Ratings

   Available in multiple configurations tailored to the user’s engine size and required flow rate.

FAQ (Frequently Asked Questions)

1. What is the main function of the 8235-639 throttle valve?

   • It regulates the intake airflow to the engine to control power output and ensure efficient combustion.

2. Is this valve compatible with Woodward governors and controllers?

   • Yes, it is fully compatible with Woodward’s actuator and control systems.

3. What type of signal does it accept?

   • It can accept analog (0–5 VDC or 4–20 mA) or PWM control signals depending on configuration.

4. Can this valve be used with gas and diesel engines?

   • Yes, it is suitable for both gas and diesel engine systems.

5. Does it support position feedback?

   • Yes, it includes internal position sensing for closed-loop control and diagnostics.

6. What is the valve construction material?

   • The body is made of anodized aluminum with stainless steel internals.

7. What is the typical response time?

   • The response time is less than 100 milliseconds under normal operating conditions.

8. How is the valve mounted?

   • It can be flange-mounted or installed inline based on system requirements.

9. What voltage is required to operate the valve?

   • The standard operating voltage is 24 VDC, though 12 VDC versions may be available.

10. Is this valve weather-resistant?

• Yes, it features IP65 protection and is suitable for harsh environmental conditions.