← Back to search

Meaning of vacuum valve | Babel Free

Noun CEFR B2

Definitions

A non-return valve allowing atmospheric air into a boiler, if a cold boiler reduces its internal pressure on cooling down.

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

vacuum workout vacuum-clean vacuum, void Vacuumed vacuumer Vacuuming