Word:

Vacuum valve

a safety valve opening inward to admit air to a vessel in which the pressure is less than that of the atmosphere, in order to prevent collapse.

See also: Vacuum

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vacuously
Vacuousness
Vacuum
vacuum aspiration
vacuum bag
vacuum bomb
vacuum bottle
Vacuum brake
vacuum chamber
Vacuum cleaner
vacuum flask
vacuum gage
vacuum gauge
Vacuum pan
vacuum pump
vacuum tube
-- Vacuum valve --
vacuum-clean
VAD
Vadantes
VADD
vadding
Vade
Vade mecum
Vadimony
Vadium
Vadium mortuum
Vadium vivum
Vaduz
Vae
VAFC
Vafrous
VAG
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