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Plumbing

Air admittance valve

Admits air in permitted configurations; do not improvise.

Also called: AAV, Studor vent (common brand), mechanical vent

Air admittance valve
Conceptual visual reference — always compare actual diameter, thread, material and approval.

Function

Admits air in permitted configurations; do not improvise.

Also called: AAV, Studor vent (common brand), mechanical vent

Before buying

Verify dimensions, compatibility, approval and access before purchase.