Kitchen Sink Vent Valve

Quick video explaining one way to vent a peninsula or island kitchen sink drain.

Kitchen sink vent valve. To be legal the loop must be 6 inches above the flood rim of the sink so when designing an island you need to choose a sink with overflow holes at least 6 inches below the rim. The use of air admittance valves for venting. But every once in a while you re going to find a sink with an open vent streaming horrible smells and odors from the. Some communities allow you to vent sinks with an air admittance valve or cheater vent.

How to fit a waste pipe non return valve to prevent back flow or smells. Otherwise the loop would have to rise above the top of the cabinet. The top of the vent is about 1 above the bottom of the sink. Kitchen sink drain pipe replaced.

An air admittance valve aav sometimes called an auto vent is a device attached to the fixture drain line it has a mechanism that opens up to admit room air into the drain under the force of the negative pressure caused by water flowing through the drain. If you have a kitchen sink in the basement on a. Cheater vent tee female threaded adapter 90 degree elbow primer cement saw. I have a kitchen sink with a aav tied into a 1 25 horizontal drain line after the trap.

Air admittance valves are inexpensive they work they can reduce the number of plumbing vent penetrations at the roof they won t get blocked by frost they re listed and approved by several. When water is released from the sink into the drain the check vent opens and allows air into the drain pipe so the water can smoothly flow away. It opens by suction. However if the drain pipe is plugged or running slow and the water starts to back up the check vent will close preventing any water from spilling.

Studor air admittance valves. How to vent a peninsula or island sink general drain venting information. If you live in such a community and your existing vent fails installing an aav is an easy alternative to. How to install a cheater vent supply list.