Our laundry room sink has this bizarre attachment to to the back of the drain line clean out. It would almost seem like it was or is supposed to be a vent. Recently it’s started to give off a foul sewer smell when our washing machine rinses.
Can I safely plug it? Maybe remove it if I can manage to pry it off? When I asked our plumber what it was, he just smirked and said it was a “crazy thing.”
Almost exactly what I said too.
Thanks for taking a look and the advice. I just went through our old demo pics and noticed the small pipe runs up and joins the primary vent stack. Now I can plug it and be done with that stench.
Think an expansion plug or should I try to chop the pipe and cap it?
https://lemmy.world/pictrs/image/aea51522-427c-4f4b-990a-62c5f3004cc6.jpeg
Perfect. Capping is the better long term solution, but an expansion plug will do the job.
I wouldn’t cap it but put in a Studor vent if there is a chance that you need more venting.