1-1/2 Provent (Pack of 10)

Price: $28.00 per pack of 10 ($2.80 each)

Availability: Ships within 3-7 business days; some items may take longer

Description

A 1-1/2" air admittance valve. It lets air into the drainage system to break the vacuum a discharge creates, without letting sewer gas out - which is how a fixture can be vented where running a vent pipe to atmosphere is impractical, such as an island sink or a converted loft. It must remain accessible and in a ventilated space, and local codes vary on where one is permitted in place of a conventional vent.