The Woodward LQ25T liquid fuel metering valve is designed for industrial and aeroderivative gas turbine engines in the 6,000 kW to 42,000 kW power range. It uses a throttling-type delta-P regulator that controls pressure drop across the metering port without bypassing fuel, making it ideal for centrifugal or other pressure-source fuel pumping systems. Compatible with diesel fuels, JP series, naphthas, kerosenes, gasolines, and other standard distillates.
Key Features
Metering
- Rotary plate valve with precision EDM-manufactured metering port
- Self-cleaning, shear-type metering action
- Flow turn-down ratios exceeding 100:1
- Throttling-type delta-P regulator (no fuel bypass)
- Compatible with centrifugal and pressure-source fuel pumps
- Corrosion-resistant metering components
- Compatible with diesel, JP series, naphthas, kerosenes, gasolines, and standard distillates
Actuation & Control
- Integral brushless DC actuator eliminates backlash from geared motors
- Rare earth permanent magnets for high-torque, compact package
- Non-contacting position sensor for precise feedback
- Remote electronic driver (supplied separately) accepts 4–20 mA command
- 4–20 mA valve position indication output
- Remote shutdown command input and fault output
- Driver locatable up to 100 m from valve to avoid hazardous atmospheres
- 18–32 Vdc power supply
Applications
- Industrial gas turbine liquid fuel metering (6,000–42,000 kW)
- Aeroderivative gas turbine engines
- Power generation and mechanical drive applications
- Marine gas turbine applications
- Systems with centrifugal or pressure-source fuel pumps
Drake Controls Services
Drake Controls is a Woodward Authorized Distributor. We stock LQ25T valves and GS/LQ drivers, and provide repair, overhaul, and field support. For repair or overhaul, submit a repair request or email service@drakecontrols.com.