Can anyone tell me if Air Admittance Valves are allowed and commonly used for venting a small island sink in California? Thanks!!!
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Replies
Greetings RB,
If you scroll down in the lower left corner of your screen there is a search function that will take you to previous threads dealing with whatever you type in the search bar.
I typed in Air Admittance Valves and got a good supply of data on the subject.
Perhaps your info on Cal is in there.
Cheers