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Transportation
Any mode or method of locomotion that serves to move people, goods or services from one location to another.
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Transportation > Railway 
saturated steam
Transportation; Railway
Steam which has not been superheated. Also known as 'wet steam'.
radius rod
Transportation; Railway
A part of Walschaerts valve gear connecting the piston rod motion to the valve gear motion.
regulator
Transportation; Railway
Once the boiler has generated sufficient steam, it can be used for useful work. A valve fitted on top of the boiler and often housed in a dome, is used by the driver to admit ...
regulator valve
Transportation; Railway
The main steam control of a locomotive. Various types of valve and various locations for it were to be seen during the history of the locomotive but it was normally at the top of ...
return crank
Transportation; Railway
On outside mounted Walschaerts valve gear, the small crank which works off the main crank to take the place of the eccentric used with inside mounted valve gear.
priming
Transportation; Railway
The siphoning of water from the boiler into the steam pipe, caused by too high a water level or by certain chemicals used to treat hard water. If water gets into the steam pipe it ...
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