Fail-safe system for a reversible pump-turbine apparatus
Fan structure with flow responsive switch mechanism
Fan with centrifugal shutter mechanism
Fan with integrated nonreturn flaps
Flange bolt for turbines
Flow control apparatus for a turbocharger turbine
Flow measurement system
Fluid driven engine
Fluidic governor system
Friction reducing arrangement for hydraulic machines
Full-arc admission steam turbine
Furnace blower housing and mounting bracket