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Turbine Fuel Valve Repairs

Steam valves, gas valves, and liquid fuel valves need routine maintenance to ensure turbine reliability, availability, and safe operation.

Woodward Gas Turbine Fuel Valve Maintenance Schedule


As recommended by Woodward, an overhaul of the component should be completed when the unit reaches either the Operating Hours or Years in Service interval, whichever comes first. Recommendations are based on normal operating conditions, fuel quality, past maintenance and environment.

Overhauling to Woodward's factory standards will return the unit to "like-new" condition and allow for another full operating cycle before maintenance is required. Overhauled unit is returned with standard new part warranty of 18 months.

Aero Derivative

Product Name Operating Hours Years in Service
Hydraulic Control Unit 50,000 hours 6 years
Variable Geometry Hydromechanical Control 50,000 hours 6 years
Variable Geometry Electromechanical Control 50,000 hours 6 years
Variable Stator Vane Actuators 50,000 hours 6 years
1907 Small Liquid Valves 25,000 hours 3 years
1907 Large Liquid Valves 50,000 hours 6 years
Liquid Shutoff Valves 50,000 hours 6 years
LQ25 & LQ25ST Liquid Metering Valves 50,000 hours 6 years
1907 Small Gas Valves 25,000 hours 3 years
3101/3171 Gas Valve with Hydraulic Actuator 50,000 hours 6 years
3101/3171 Gas Valve with Electric Actuator 50,000 hours 6 years
Gas Shutoff Valve 50,000 hours 6 years
GS3/GS10 Gas Metering Valve 25,000 hours 3 years
GS6/GS16 Gas Metering Valve 50,000 hours 6 years
3151 Water Metering Valve 50,000 hours 6 years
CIT/CDP Sensor 50,000 hours 6 years
2057 Pump 50,000 hours 6 years
Electric Gas Metering Valve (EGMV) on LMS100 50,000 hours 6 years
Electric Water Metering Valve (EWMV) on LMS100 50,000 hours 6 years
Electric Liquid Metering Valve (EMLV) on LMS100 50,000 hours 6 years
Variable Bleed Vane (VBV) on LMS100 50,000 hours 6 years

Heavy Frame

Product Name Operating Hours Years in Service
Globe Gas Fuel Control Valve (Hydraulic and Electric Actuated) 50,000 hours 6 years
SonicFlo Gas Fuel Control Valve (Hydraulic and Electric Actuated) 50,000 hours 6 years
Rotary Fuel Control Valve (Hydraulic and Electric Actuated) 50,000 hours 6 years
3-way Liquid Fuel Control Valve (Hydraulic Actuated) 50,000 hours 6 years
2-way Liquid Fuel Valve (Hydraulic and Electric Actuated) 50,000 hours 6 years
2-way Water Metering Valve (Hydraulic and Electric Actuated) 50,000 hours 6 years
Inlet Guide Vane (IGV) Actuator 50,000 hours 6 years
Variable Guide Vane (VGV) 50,000 hours 6 years

Woodward Steam Turbine & Engine Governor/Actuator Maintenance


  • Change governor/actuator oil between 3,000 and 5,000 running hours
  • Ensure the use of proper oil
  • Perform overhaul and calibration between 20,000 and 25,000 running hours
  • Repair of auxiliary equipment is also recommended

Catastrophic failure may result if governors are pushed past recommended limits of maintenance, i.e. seizure of oil pump, bearing failures, etc. If prime mover is critical to operations, a recommended preventive maintenance schedule should be followed. Repair costs can be excessive when units are operated beyond the hours of recommended maintenance.

Find out more about our Maintenance Plans