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Thanks guys. I appreciated the feedback. I'm leaning toward the AAV route. There's one optional scenario that just occurred to me that I'd like to run by you. I have enough room in the wall behind the sink loop a vent 1/2" or so over the flood level of the sink before it dives under the floor. The picture below shows what I mean. It's similar to plumbing for an island, but I'm thinking it could be simplified a bit since the vent loop gets above the flood level, so there's no risk of it flooding. I would slope the vent towards the stack, rather than the fixture. Is this a good, Canadian code compliant option?Originally Posted by mikeplummer
Last edited by Buttonsrtoys; 11-05-2012 at 04:46 AM.
I hope you haven't started on your sink yet!
This is straight from the National Plumbing code of Canada (2005) in the appendix
The only thing I might tweak on it would be to add a back vent- depending if anything was coming down the stack from above. Good luck!
Last edited by plmrgrl; 11-05-2012 at 06:08 PM.
Thanks for the clarification! Unfortunately, I started. I have the drain portion installed and was about to put in the AAV when it occurred to me that I could run the vent loop above the flood level. Its just as well. The trap wasn't as accessible from below as I thought.
Is my vent-loop design OK?
Last edited by Buttonsrtoys; 11-06-2012 at 03:49 AM.
is should be ok as long as theres no dips or low spots in the vent portion that could collect water...also go as high as possible(within reason ex.6"-8") above the flood level of sink with your loop...also you need to install a cleanout downstream of the trap or use a union p-trap
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