English Explanatory Dictionary

air admittance vent

English dictionary entry

Meanings

noun
  1. a mechanical sewer vent that allows air to enter into the sewage system but does not allow exhaust of sewer gases, to aid the flow of sewage by providing air behind water, where a standard vent stack to atmosphere is not possible, by drawing in interior air but keeping harmful sewer gases contained.

Word forms

air admittance vent air admittance vents

Synonyms

AAV mechanical vent mechanical waste vent mechanical sewer vent
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