Abstract: A system includes a fluid valve metering system which regulates a flow of a fluid within a gas turbine engine. The fluid valve metering system includes an inlet manifold, an outlet manifold in fluid communication with the inlet manifold, and multiple fluid conduits extending between the inlet manifold and the outlet manifold. Each respective fluid conduit of the multiple fluid conduits includes a respective fluid conduit valve of the multiple fluid conduit valves. Each fluid conduit valve regulates fluid the flow of the fluid through the respective fluid conduit. The fluid valve metering system also includes multiple differently sized orifices and a controller. The controller is coupled to the fluid valve metering system and programmed to monitor a usage of each orifice of multiple differently sized orifices, of each fluid conduit valve of multiple fluid conduit valves, or a combination thereof.

Abstract: A fuel metering valve system for use with a flow of fuel in a gas turbine engine may include a number of orifice plate lines, a number of differently sized orifice plates, and a number of orifice plate line valves. One of the orifice plate line valves opens and closes one of the orifice plates on the orifice plate lines.