relief valve
noun
a device that, when actuated by static pressure above a predetermined level, opens in proportion to the excess above this level and reduces the pressure to it.Compare safety valve(def 1).
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Words nearby relief valve
relic area, relict, relief, relief map, relief pitcher, relief valve, reliefer, relier, relieve, relieve oneself, relieve someone of
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Example sentences from the Web for relief valve
As the pressure lowers, the excess gas can escape through a relief-valve.
Creatures of the Abyss|Murray Leinster