processengr
New Member
Hi!
I have read posts/lurked in this forum for years, getting good advice from Terry and HK (bought a Kohler Villager tub based on this forum) and others!
I have a question that I could not find discussed in the numerous posts about replacing a single sink lavatory with a double, and hacking the existing plumbing to work without opening the wall.
Double P traps into single are NG- siphoning. Two waste arms into single P trap- lots of untrapped area can form foul odors.
How about two P traps/ one per sink, AAV valve for each trap, then into the single drain?
I know AAV are not allowed everywhere, but, they are allowed in many places.
What am I missing?
I have read posts/lurked in this forum for years, getting good advice from Terry and HK (bought a Kohler Villager tub based on this forum) and others!
I have a question that I could not find discussed in the numerous posts about replacing a single sink lavatory with a double, and hacking the existing plumbing to work without opening the wall.
Double P traps into single are NG- siphoning. Two waste arms into single P trap- lots of untrapped area can form foul odors.
How about two P traps/ one per sink, AAV valve for each trap, then into the single drain?
I know AAV are not allowed everywhere, but, they are allowed in many places.
What am I missing?