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A piston valve is a device used to change the pitch of a brass instrument; three or more piston valves can be found on trumpets, tubas, and the like. An alternate to the piston valve is the rotary valve. Brass instruments

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Topics: Piston Valve, Pistons...

PistonIn general, a piston is a sliding plug that fits closely inside the bore of a cylinder. Its purpose is either to change the volume enclosed by the cylinder, or to exert a force on a fluid inside the cylinder. A piston in an internal combustion engine usua

Piston valveA piston valve is a device used to change the pitch of a brass instrument; three or more piston valves can be found on trumpets, tubas, and the like. An alternate to the piston valve is the rotary valve. Brass instruments.

PistonsFor the engine and engineering part, see piston. For the basketball team, see Detroit Pistons.

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