Is this a valid layout for a vent?
Is this a valid layout for a vent?
15 comments
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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.
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Cool - thank you…
Do you happen to know why so many diagrams seem to have loops? (like this):
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Without that extra loop, it's possible that flushing the toilet will suck the water out of your sink trap.
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I know absolutely nothing about professional plumbing, but wouldn't that sink loop need to be there to act as a drain and vent for the sink? I don't think the main vent stack would work for that without it
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Is this a valid vent layout? Sorry for such a basic question but plumbing always seems to have some "gotcha" I didn't consider
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Maybe it's because I'm not a plumber, but that diagram doesn't include any information about your plans.
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I’m not a plumber either so I could be completely wrong, but I believe it’s a minimum viable vent diagram.
What do you think is missing?
I basically have a drain with no vent or p-trap or anything and I’m hoping this would be a viable fix (you could imagine the right “column” as a straight line and that would be the current configuration)
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Will there be other drains from the same room tied in? Your drawing should work but it may need to be altered a little if there's a toilet on the same branch.
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No - just the single drain.
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15 comments