AAV

{
  "id": "MLC-T-IND-000036",
  "term": "AAV",
  "field": "Industrial and trades",
  "definition": "An abbreviation for Air Admittance Valve, a mechanical device installed in a plumbing drainage system to allow air into the pipework. This prevents a vacuum from forming when water drains, which could otherwise siphon water out of fixture traps. AAVs are an alternative to traditional vent pipes, especially in situations where conventional venting is impractical or impossible.",
  "subject": "Plumbing",
  "references": [
    "BOD 19-09: Air Admittance Valves (portland.gov)"
  ],
  "translations": {
    "de": "AAV",
    "es": "AAV",
    "fr": "AAV"
  },
  "url": "https://mlchart.com/terminology/industrial/aav/"
}