Actually that does happen. It happened before the switch and it still happens, although not as bad. It only happens when I put on the disposal on. Water used to shoot out the drain like 3 feet now it just comes up. Still annoying is there a way to fix that?Looks good.
Sometimes, in that configuration, the disposal can pump waste water right across into the other sink drain, and it can shoot up from the drain or partially fill the sink.
If that happens, changes can be made.
We run it at least once a day many times twice. It also was never in the disposal until this replumb. The force of water coming out the drain is considerable so I don't think there is a blockage anywhere. I wonder if this has anything to do with the water fractionation I fixed by running the shorter cycle. I cleaned up everything (all the gunk) but maybe there is some of that garbage in the drain lines. It's been 6 months so my inclination is that it should be clean by now. There is an extension hose on the dishwasher drain as well since the dishwasher is a half a cabinet away from the sink so the included drain was a little short.The dishwasher stink is because food particles can decompose in the drain line.
Then they drain into the disposal, mixed with warm water, which lifts that stink right out of the disposal opening.
You can try running the dishwasher more often.
I added the AAV per advice of a plumber. This is already a properly vented drain with an open roof vent.That AAV isn't helping when that disposal drain is pressurizing the piping contents. Not saying you should change it but I bet if it was a piped vent, it would be less apt to blow it up the other sink basin.
But if you ever do re-pipe things, I would suggest mounting that AAV as high as possible, while leaving enough clearance to allow it to be replaced, if need be.
Oh! Okay. My thought was that the AAV close's when subjected to a little pressure, while the piped vent is open to flow in either direction.I added the AAV per advice of a plumber. This is already a properly vented drain with an open roof vent.
Ha! Good luck finding all the parts to do that. All I could find were these "standard" 1 1/2" "sink" parts. You can see I used adapters where I could to switch to actual plumbing pieces.Oh! Okay. My thought was that the AAV close's when subjected to a little pressure, while the piped vent is open to flow in either direction.
Another thought that just came to mind is the fact that those 2 basin drains join together in a tee of the same size and doesn't increase in size until after the tee. I would think increasing the tee size would help the combined flows and/or some of that restriction going down.
Your advice is sound but I thought about raising it up and figured the main reason it would matter is if there should be a clog in the actual drain downstream of my last fitting (the one the AAV is on top of). In that case, the AAV could flood unless it is above the level of the sinks, which I don't see any way to get that high there just isn't room. But since it is a threaded fitting on the AAV (meaning it could also act as the cleanout) it would be a simple matter to unscrew it to raise it up a bit. That thing behind it is the control for the motion activated faucet, which was installed before the replumb. I'd have to move that over too.Only thing i see is the AAV looks a tad low to my eyes
If you were to cut the pipe below the AAV.
then add a 2'' tee. with a CO
then reinstall the AAV on top of that'
I think you will thank me if you ever have to snake that drain.