Definitions
from The Century Dictionary.
- noun A valve through which water or other fluid may be blown out or drained away.
- noun The blow-off valve in a steam-boiler through which water and mud, or precipitated solids in the water, can be blown to waste.
- noun The valve or gate in the waste-weir or sluice of a dam, through which water may be wasted or allowed to flow out of the pond above the dam to relieve the latter.
Etymologies
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Examples
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But the action of the key on _gg_, which opened the pallet _p_, also allowed the double-acting waste-valve _e_ to close, and the tape _f_ hangs loose.
The Recent Revolution in Organ Building Being an Account of Modern Developments George Laing Miller
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The compressed air, therefore, as it is admitted through _bb_ cannot escape, but on the other hand when the key releases the outer end of _g_, and lets it rise up again, the tape _f_ becomes tightened and opens the waste-valve, the bellows _cc_ then drops into its closed position.
The Recent Revolution in Organ Building Being an Account of Modern Developments George Laing Miller
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