Kitchen sink needs vented out thru roof, but if not possible, some codes allow an AAV to be installed.
I would install an AAV if
The recommended installation height for an air admittance valve is typically between 4 to 6 inches above the highest point of the fixture it serves.
An air admittance valve in a toilet system allows air to enter the plumbing system, preventing negative pressure that can lead to slow drainage or gurgling noises.
put it on ya stink pipe
An air admittance valve under the sink is used to allow air to enter the plumbing system, preventing negative pressure and helping to maintain proper drainage flow.
Is the sink valve leaking in your kitchen or bathroom?
Yes, is the under sink valve leaking in your kitchen?
To determine if an air admittance valve is functioning properly, you can conduct a visual inspection for any signs of damage or blockages. Additionally, you can test the valve by running water through the plumbing system and observing if the valve opens and closes as it should. If you notice any issues or irregularities, it may be necessary to replace the valve to ensure proper functioning of the plumbing system.
An air admittance valve for a washing machine is used to prevent sewer gases from entering the plumbing system. It allows air to enter the system to equalize pressure, which helps prevent siphoning and allows for proper drainage of water from the washing machine.
The water shut off valve for the dishwasher in your kitchen is typically located under the sink.
An air admittance valve for a toilet is used to allow air to enter the plumbing system, preventing negative pressure that can lead to sewer gases entering the bathroom. It works by opening to let air in when needed, but closing to prevent gases from escaping.
It could very well be an "Air admittance valve." Plumbing systems require a smooth flow of air and water to operate properly, these vents historically were routed through the roof and allow for the relief of positive and negative pressures in the vent system. "Air admittance valves" are installed under sinks and lavatories that are inconvienient to route a vent to the roof. These vents while handy do not respond well to back pressure, they are designed to seal during moments of positive pressure and "breathe" while in moments of negative pressure, this is to prevent sewer gas from entering the room. The purpose of the trap is to prevent sewer gas from entering the room, the purpose of the vent is to relieve positive and negative pressures in the drain and vent system to prevent trap seal loss. The slang name for an "air admittance valve" is studor vent. "Studor" is a manufacturer of AAV's Hope this helps