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So the drainage actually goes under the floor outside of the bathroom about 20" off of that vertical pipe for the sink. There is already an AAV on that vertical pipe next to the sink though. The total distance of the trap arm to where that pipe vertical pipe goes up is roughly 64" so I should...

Hopefully these images can help. What you are looking at is the existing plumbing from the tub that was removed. The AAV closest to the p trap was underneath the lip of the tub (which wouldn't have been accessible). There is a second AAV located underneath the sink where the shower drain ties...

RV Showers drains are a standard 1 1/2, likely because of the inherent water saving showerheads, fixtures, etc. I can easily get the AAV up 6" above the trap without any issue, but everywhere I've looked says the vent tee must turn vertical immediately. In this case I don't have any vertical...

Good morning, I have a situation where our camper had a significant water leak in the bathroom of our RV and I've since pulled out the tub and plan on replacing it with a shower. When I pulled the tub out I realized there was a hidden AAV beneath the tub rim for the vent. The current plumbing...

Hi Wayne, That is correct, there is another vent (not drain) stack going up that serves the basement bathroom that is not pictured to the left in that photo. My intention was to run back to that to vent the sink and avoid the AAV. I was just wanted to make sure I was on the right track...

Total amateur plumber here and I'm looking to make sure I have all my bases covered before drywall goes in. The space where the photo is taken will not be finished for some time, if ever, but I want to make sure I'm on the right track before I finish the drywall in the other room where the wet...