Venting a basement sink. Installing an aav to vent a sink is fairly easy whether you are replacing an old existing vent or putting one in for the first time. Vent for a basement bar sink.
basement sink vent basement kitchen sink vent diagram
No vent just one pipe carries gray water and air.
Basement sink vent. Subscribe to this old house. While it is possible to install an aav hidden inside walls during remodeling work it is more common to install them right under the sink cabinet as an adaptation of the pipe joining the drain trap to the. Im unsure of venting procedures in such a situation. Vent line to an existing 1 12 in.
Just bring the 3 up into the cabinet use a 3 x 1 12 tee to catch the trap and place a 3 cleanout in top of the tee. Before cutting a section out of the old steel vent we installed extra metal strapping to support the pipe during and after cutting. The thinking is there will be enough free air volume to keep the trap from sipohning. There is a 2 pvc drain stubbed up approximately 10above the floor for the addition of such a sink but it is about 10 from the nearest stack.
It may not satisfy your inspector though might ask and see. I have a simliar setup in my basement where the sink is less about 35 feet away its 1 12 inch pvc connecting to the 4 inch cast main stack. North carolina plumber nc we are allowed to double the size of the drain in lieu of a vent on sinks. Thanks in advance for any advice and assistance.
Our plumbing inspector allowed us to connect our new 2 in. In most basements you can tie your new vent system into the line that vents the laundry sink. The international plumbing code requires venting of all sinks showers tubs and plumbing fixtures where wastewater drains away. Sponsored links 2.
No vent just one pipe carries gray water and air. For sinks this is usually a 1 12 vent line either directly vented to the outside or tapped into a 3 or larger main vent. I would like to finish my basement one year old condo and install a wet bar under the basement steps. Ask this old house plumbing and heating expert richard trethewey helps add ventilation to a bathroom sink that is unvented.
It basically involves tapping into the existing drain trap configuration to install an aav via a new sanitary tee fitting and a short upward extension pipe.
