Description
The 9907-1228 is an electro-hydraulic converter (CPC-II) produced by Woodward, primarily used in steam turbine valve servo systems. Below is a detailed introduction to this product:
I. Product Features
- High-Precision Control:
- The 9907-1228 electro-hydraulic converter linearly converts a 4-20mA control signal into a proportional hydraulic pressure output, enabling high-precision valve control.
- It meets the control accuracy, responsiveness, and redundancy requirements demanded by steam or gas turbine fuel control valves.
- Strong Compatibility:
- This electro-hydraulic converter can be matched with various electronic control devices, such as Woodward MicroNet or 505 series controllers.
- It is suitable for pressure-type servo systems or single-acting power cylinders, as well as retrofit projects for older machinery.
- Compact Design:
- The 9907-1228 electro-hydraulic converter features a compact design, facilitating easy installation and maintenance.
- Its modular design allows for seamless integration into existing control systems.
- High Reliability:
- Woodward has a long history and extensive experience in the field of electro-hydraulic converters, enjoying a strong reputation.
- The 9907-1228 electro-hydraulic converter undergoes rigorous quality control and testing to ensure stable operation in harsh industrial environments.

9907-1228 Woodward Electro Hydraulic Converter CPC-II
II. Application Areas
- Steam Turbine Valve Servo Systems:
- The 9907-1228 electro-hydraulic converter is a critical component in steam turbine valve servo systems, used for precise control of valve opening and closing speed.
- It enhances the operational efficiency and stability of steam turbines while reducing failure rates.
- Industrial Automation:
- In the field of industrial automation, the 9907-1228 electro-hydraulic converter can be used in various scenarios requiring precise control of hydraulic or pneumatic systems.
- It seamlessly integrates with PLC, DCS, and other control systems to achieve automated control.
- Energy Management:
- In energy management, the 9907-1228 electro-hydraulic converter can control the output power and efficiency of power generation equipment.
- It precisely adjusts the operating parameters of power generation equipment based on grid demands and equipment status.
III. Market Supply
- Suppliers:
- The 9907-1228 electro-hydraulic converter is available from multiple suppliers in the market, including Woodward’s official channels, authorized distributors, and third-party suppliers.
- Users can choose the appropriate supplier based on their needs and budget.
- Pricing and Inventory:
- Prices vary depending on factors such as the supplier, order quantity, and product specifications. Users can contact suppliers to obtain specific quotes and inventory information.
- Some suppliers may offer immediate availability, while others may require a lead time for delivery.


