air admittance vent (English, noun)
expansion: air admittance vent (plural air admittance vents)
Senses:
topics: business
construction
manufacturing
plumbing
glosses: 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.
Forms:
form: air admittance vents
tags: plural