Overview

The Woodward 9907‑1198 belongs to the Woodward CPC‑II / 9907 series electro‑hydraulic converters. It is used to convert electronic control signals into hydraulic power for accurate valve actuation in steam turbines, gas turbines, and compressors. This model is a rotary actuator type, while related models (e.g., 9907‑1200) are linear actuators.

It is commonly paired with Woodward turbine controllers (505, 505E, 2301A, etc.) to provide closed‑loop speed/load regulation and overspeed protection.

Technical Specifications

Key Features

• Rotary Electro‑Hydraulic Actuator: Converts electronic signals into precise rotary motion for valve positioning.

• Wide Environmental Range: Operates reliably from –40 °C to +85 °C with vibration resistance up to 7.5 g.

• Compact & Lightweight: Weighs under 1 kg, easy to integrate into turbine systems.

• Versatile Compatibility: Works with Woodward controllers such as 2301A, 505, and CPC‑II.

• Industrial Reliability: Designed for continuous operation in harsh turbine/compressor environments.

Typical Applications

• Steam Turbines: Fuel valve actuation and overspeed protection.

• Gas Turbines: Precise fuel metering for speed/load control.

• Compressors: Control of inlet guide vanes or fuel valves.

• Industrial Engines: Integration with Woodward electronic governors for redundancy.

FAQ

Q1: What is the main function of the 9907‑1198?

A1: It converts electronic control signals into hydraulic power for rotary valve actuation.

Q2: How does it differ from the 9907‑1200?

A2: The 9907‑1198 is rotary, while the 9907‑1200 is linear.

Q3: What controllers is it compatible with?

A3: It works with Woodward 2301A, 505/505E, CPC‑II, and other turbine controllers