Woodward Industrial Turbine Fuel Control Valves

Liquid Fuel Control Valves for Gas Turbines

ELMV (Electric Liquid Fuel Control Valve)

Woodward’s Electric Liquid Metering Valve controls liquid fuel flow into various stages of an industrial gas turbine combustion system. The valve and all-electric actuator are integrated for precise fuel control under all operating conditions.

The valve section of the ELMV consists of a flow controller and a throttling pressure regulator. The regulator maintains a constant differential pressure across the control plug and seat. Plugs are contoured to provide an equal percent flow characteristic.

Woodward’s ELMV is supplied with an integral all-electric actuator that uses a brushless dc motor to drive the valve mechanism. A motor position resolver within the assembly acts as the primary motor commutation and actuator/valve position feedback device. This position signal is used by the external Woodward DVP (Digital Valve Positioner) as feedback to properly position the ELMV. A second resolver is attached to the valve stem and acts as a backup to the primary motor resolver. The actuator portion of the ELMV uses a soft stop spring that prevents the actuator from slamming into the minimum stop position in cases of fault detection.