Woodward 9907-135 GS3/LQ Valve Driver Module

The 9907-135 (Model: 9907-135) is a specialized Valve Driver Module designed for high-current actuation within Woodward’s GS3 and LQ series liquid valve systems. Specifically engineered to interface with LQ3, LQ25, LQ25T, and LQ Bypass series valves, this module converts a standard 4–20 mA control signal into a high-amperage output required for precise fuel metering. The 9907-135 (Part Number: 9907-135) is a critical component for large-scale gas and liquid fuel turbines, ensuring that the fuel valve position accurately tracks the turbine controller’s commands through a dedicated resolver feedback loop.

Unlike standard speed control units, the 9907-135 (Driver Module: 9907-135) is optimized for high-power demands, capable of delivering up to 24 Amps to move heavy valve assemblies. It utilizes a single-speed feedback resolver to provide real-time, high-resolution positioning data back to the module, allowing for closed-loop control that compensates for friction and fuel pressure variations. This ruggedized driver is built into a durable industrial chassis to withstand the thermal and vibrational stresses found on turbine skids and in marine engine rooms.

Detailed Technical Specifications

The 9907-135 (9907-135) is defined by its high-current output and specialized feedback integration.