Definitions
from The Century Dictionary.
- noun In a steam-engine, a valve which shuts off the steam in its passage to the slide-valves when the piston has travelled a certain distance in the cylinder, leaving the remaining part of the stroke to be performed by the expansion of the steam. See
expansion-gear . - noun Same as
expansion-cock .
Etymologies
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Examples
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The steam-valve is a packed slide with but little lap, and the expansion-valve is an adjustable slide working on the back of the steam-valve.
The Atlantic Monthly, Volume 05, No. 29, March, 1860 Various
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