this post was submitted on 06 Jan 2025
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Ignoring scale and any local requirements, yes, that's a valid trap and vent.
Be aware that local inspectors can be touchy about t-junctions. You might need a rounded or angled junction here so the new drain doesn't splash directly against the opposite side of the vent.
Cool - thank you…
Do you happen to know why so many diagrams seem to have loops? (like this):
Without that extra loop, it's possible that flushing the toilet will suck the water out of your sink trap.