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9907-124 - TM55-P Gas Fuel Actuator / Valve Assembly is available in stock which ships the same day.
9907-124 - TM55-P Gas Fuel Actuator / Valve Assembly comes in UNUSED as well as REBUILT condition.
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TECHNICAL SPECIFICATIONS:
Part Number: 9907-124
Manufacturer: Woodward
Model / Designation: TM55-P Actuator / Fuel Valve Assembly
Application: Industrial Gas Turbine Fuel Control and Metering Systems
Actuation Type: Electro-Hydraulic Servo Actuator
Operating Fluid: Hydraulic Control Oil Compatible with Turbine Fuel Control Systems
Supply Pressure Range: 17.2 to 34.5 bar (250 to 500 psig)
Control Signal Input: Proportional Electrical Current Command Signal
Servo Coil Configuration: Low-Impedance Electro-Hydraulic Servo Coil
Position Feedback: Integrated LVDT (Linear Variable Differential Transformer) Position Feedback
LVDT Excitation: 3.0 Vrms to 7.0 Vrms at 2.5 kHz to 3.0 kHz
Flow Characteristic: Precision Metering Port Configuration
Enclosure Protection: Industrial-Grade Weather-Resistant Construction
Operating Ambient Temperature: -40�C to +93�C (-40�F to +200�F)
Fluid Temperature Limit: Up to +100�C (+212�F)
Hazardous Area Capability: Suitable for Hazardous Area Applications (Configuration Dependent)
External Finish: Corrosion-Resistant Industrial Coating
Vibration Resistance: Designed for Industrial Turbine Operating Environments
Repair Time: 3�7 Days
Availability: In Stock
Weight: Approximately 14.5 kg (32.0 lbs)
Country of Origin: United States
The 9907-124 is a TM55-P Gas Fuel Actuator / Valve Assembly designed and manufactured by Woodward. Built for demanding industrial gas turbine fuel control systems, it acts as a primary positioning element that precisely regulates gas fuel flow delivered to the engine combustors. By converting incoming electronic positioning commands into proportional hydraulic movement, the 9907-124 delivers ultra-fast metering response required for turbine speed governing, acceleration control, and sudden load management.
ELECTRO-HYDRAULIC ACTUATION & HIGH-ACCURACY FEEDBACK
The TM55-P actuator utilizes high-force hydraulic pressure to overcome gas stream dynamics and internal mechanical friction. Inside the unit, an electro-hydraulic pilot mechanism adjusts fluid pressure across an internal piston assembly, translating minute electrical control inputs into stable, repeatable valve stroke positions. To ensure high closed-loop control accuracy, the assembly features an integrated LVDT position sensor that provides real-time valve position telemetry directly back to the Woodward turbine governor or driver module (such as the EM35 or 505/MicroNet system).
FAIL-SAFE OPERATION & ENVIRONMENTAL DURABILITY
The 9907-124 incorporates fail-safe closing mechanisms. In the event of a total loss of hydraulic supply pressure or electrical control signal, internal mechanical return springs force the valve assembly to a fully closed shutdown position, preventing unmetered fuel from entering the turbine. Ruggedized housing seals and corrosion-resistant surface treatments protect internal hydraulic components from environmental degradation, high ambient temperatures, and thermal cycling.
WHY BUY FROM WOC
World of Controls specializes in the supply, repair, and lifecycle management of critical Woodward turbine control system components for legacy and active industrial applications worldwide. Every Woodward 9907-124 TM55-P assembly undergoes a comprehensive multi-point testing process, including hydraulic pressure proof testing, LVDT calibration, coil impedance check, step-response timing validation, and thermal stability checks to ensure reliable operation in demanding field environments. We maintain ready-to-ship inventory of unused and professionally rebuilt units, providing customers with fast replacement solutions to minimize plant downtime. Backed by expert repair and exchange services, warranty support, global shipping capabilities, and extensive experience with Woodward fuel valves and actuators, we deliver dependable solutions for critical turbine maintenance and outage requirements.
What is Woodward 9907-124?
The Woodward 9907-124 is a TM55-P gas fuel actuator assembly used in industrial gas turbine fuel control systems. It controls fuel flow to the combustor by regulating valve position based on electronic control signals from the governor.
How does the LVDT feedback work on the 9907-124 TM55-P?
The onboard LVDT (Linear Variable Differential Transformer) senses the physical position of the valve spool/stem and sends an AC voltage feedback signal back to the turbine control system or driver card. This enables precise closed-loop positioning and rapid diagnostic detection of valve sticking or calibration drift.
What causes a position error fault on a TM55-P actuator?
Position error faults are typically caused by contaminated hydraulic fluid clogging internal pilot orifices, worn internal seals creating excessive blow-by pressure, degraded LVDT wiring, or incorrect driver card calibration. Regular hydraulic fluid filtration testing helps prevent pilot blockage.
Where can I buy a Woodward TM55-P Actuator?
The Woodward actuator assembly can be purchased from industrial spare parts suppliers specializing in turbine controls. World of Controls supplies unused and rebuilt 9907-124 units with full testing, warranty support, and repair or exchange options.
