I am adding a "party sink" or wet bar sink to my rec room and I want to know the right/best way to add the drain. The new sink will be on the other side of the wall from the existing bathroom sink drain/vent. Can I just connect into the existing PVC line with an additional Y or a Double Y like the image attached? If either of these options are no good, what would you suggest to make this work? Thanks for your feedback, time and knowledge sharing!
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