A shuttle valve in an aircraft system would allow you to energize a pneumatic component with a ground cart as opposed to with an onboard compressor.
Aircraft stand extremely reliable when appropriately cared for and can deliver years of safe flight. But not all pilots know as much as they should about the proper care and supervision of their aircraft's engine, propeller, and pneumatic system—all critical to the safety of flight.
These contain the engine, propeller, induction, and ignition, as well as the fuel, lubrication, cooling, electrical, landing gear, and environmental control systems. An aircraft engine, or powerplant, creates thrust to propel an aircraft.
A shuttle valve exists as a kind of valve which allows fluid to flow through it from one of two sources. Generally, a shuttle valve is employed in pneumatic systems, although sometimes it will be found in hydraulic systems.
A shuttle valve also understood as a double-check valve permits pressure in a line to be obtained from alternative sources. It exists primarily as a pneumatic device and stands rarely found in hydraulic circuits. Construction is very easy and consists of a ball inside a cylinder.
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