this post was submitted on 20 Mar 2024
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Home Improvement

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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.”

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[–] [email protected] 4 points 7 months ago (1 children)

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?

main stack

[–] [email protected] 4 points 7 months ago (1 children)

Perfect. Capping is the better long term solution, but an expansion plug will do the job.

[–] [email protected] 1 points 7 months ago

I wouldn't cap it but put in a Studor vent if there is a chance that you need more venting.