Are AAVs legal in Kentucky?

[arkanos]

I'm remodeling a bathroom and am having trouble determining if air admittance valves are legal in Kentucky. If so, it would save me a ton of work running the sink vent (I'm moving the sink). The only thing I can find are some very dated articles/forum posts indicating they aren't legal and some lawsuits issued by Studor trying to make them legal.

If I've correctly interpreted the website of the people trying to sell me an AAV, it appears that Kentucky has adopted the IRC statewide and the IRC condones properly installed AAVs?

 

[Reach4]

http://dhbc.ky.gov/Documents/2017 Kentucky State Plumbing Law Regulations and Code Book.pdf

http://dhbc.ky.gov/documents/PlumbingCodeChanges2020JMFedits061620.pdf talks of changes. No mention of IPC.

I did not find indication that KY allows AAVs, but I could have missed it.

 

[Sponsor]

 

[Tuttles Revenge]

We have to go city by city for acceptability. They're approved statewide in washington state, but restricted jurisdiction by jurisdiction.

 

[arkanos]

I finally got ahold of the state codes department who indicated they are not allowed.

 

[single_digit]

Sorry to dredge up an old thread, but I'm in a similar situation (Louisville, KY) and trying to determine if an AAV is allowed. My understanding is that they HAVE to be allowed in some uses (such as kitchen islands and such). Any clear guidance on when AAVs are, and are NOT allowed would be extremely helpful.

 

[Jeff H Young]

Sorry to dredge up an old thread, but I'm in a similar situation (Louisville, KY) and trying to determine if an AAV is allowed. My understanding is that they HAVE to be allowed in some uses (such as kitchen islands and such). Any clear guidance on when AAVs are, and are NOT allowed would be extremely helpful.

If you find out let us know I think what happened was certain authoritys caved in to pressure Probebly making a sencible allowance is understandable my opinion is and allways has been that they are not a vent or equall to a vent and shouldnt be used whithout good reason saves 50 bucks and 10 minutes work isnt good enough to me to lower our minimum standards I think vents are better . but in some cases the hardship is unreasonable to deny someone using a AAV if it for example means thousands or many hundreds of dollars to comply

 

[single_digit]

If you find out let us know I think what happened was certain authoritys caved in to pressure Probebly making a sencible allowance is understandable my opinion is and allways has been that they are not a vent or equall to a vent and shouldnt be used whithout good reason saves 50 bucks and 10 minutes work isnt good enough to me to lower our minimum standards I think vents are better . but in some cases the hardship is unreasonable to deny someone using a AAV if it for example means thousands or many hundreds of dollars to comply

I posted the same question in a plumbing subreddit, but haven't gotten a real answer there. In my case the vent will have to pass through the second floor to the attic to tie in with the venting there. According to my stud sensor there is lots of blocking in the wall of the second floor that I'd have to deal with. If I were to hire this out I can't imagine it not being well over a thousand to rough in. But I would assume price of install is not the determining factor to okay an AAV. I tried looking at the Int'l plumbing code section on AAVs, but I couldn't make sense of it from the terminology.

 

[Jeff H Young]

I posted the same question in a plumbing subreddit, but haven't gotten a real answer there. In my case the vent will have to pass through the second floor to the attic to tie in with the venting there. According to my stud sensor there is lots of blocking in the wall of the second floor that I'd have to deal with. If I were to hire this out I can't imagine it not being well over a thousand to rough in. But I would assume price of install is not the determining factor to okay an AAV. I tried looking at the Int'l plumbing code section on AAVs, but I couldn't make sense of it from the terminology.

In some cases or jurisdictions hardship and cost have no concideration , you should be able to determine what the code is wherever your job is I probebly could but There could be details that are unknown like is the job in the county or a particular county you could have checked your building department possibly and asked I dont intend to look into it or check if you have a local city code . Also there is option to just build it without permits Im not recomending it but you wouldnt be the first. Its not unusual for certain items to be permissable "with aprooval of the Authority having jurisdiction" Ive heard of exceptions but never have been given one in terms of AAV use