Foxboro Valve Positioner

positioner
rotary actuator: (computer science) the actuator that moves a read/write head to the proper data track
Any mechanical device used to position something
Brief statement used on-air to define a station's position in a market.

foxboro
Foxboro station on the MBTA Commuter Rail system is only used for special events, such as New England Patriots football games, at nearby Gillette Stadium. It lies on a freight line between Mansfield and Framingham, owned by CSX as their Framingham Subdivision.

valve
A cylindrical mechanism in a brass instrument that, when depressed or turned, admits air into different sections of tubing and so extends the range of available notes
control consisting of a mechanical device for controlling the flow of a fluid
A membranous fold in a hollow organ or tubular structure, such as a blood vessel or the digestive tract, that maintains the flow of the contents in one direction by closing in response to any pressure from reverse flow
device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
A device for controlling the passage of fluid through a pipe or duct, esp. an automatic device allowing movement in one direction only
a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it