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Woodward 9902-441
Product Name: VG Electro-hydraulic Controller (P31) – 3055 Hydraulic Pump / Servo Valve Assembly
Product Introduction: The 9902-441 is a Woodward hydraulic pump and servo valve assembly for GE LM2500+ gas turbines, part of the 3055 Hydraulic Pump/Servo Valve Assembly product line. The assembly uses a positive-displacement gear pump to supply hydraulic pressure to the fuel metering valve/actuator (FMV/A) and variable stator vane (VSV) servo valve and actuator.
Detailed content
Technical Specifications:
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Turbine Application: GE LM2500+
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Assembly Position: P31
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Pump Type: Positive-displacement gear pump
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Companion Servo Valve: 9902-414 (P24)
Functional Features:
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Delivers hydraulic pressure to FMV/A and VSV servo valve/actuator
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Component of Woodward 3055 hydraulic pump/servo valve assemblies
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Built for industrial gas turbine operation
Application Scenarios: GE LM2500+ gas turbine fuel metering and variable stator vane actuation.
Working Principle: The gear pump generates hydraulic pressure to drive the fuel metering valve/actuator and VSV actuator, controlling fuel delivery and compressor vane position.
Installation Requirements: Follow Woodward manual 26212. Verify publication revision status before commencing work.
Usage Notes: All safety instructions must be followed. An independent overspeed shutdown device is mandatory for the protected prime mover.
