Drain for double vanity

Old 11-21-16, 12:07 PM
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Drain for double vanity

I have a single vanity that I'm converting to a double and was wondering if I can share the same drain for both sinks. I found some examples of this but others think that sink 1 (see below) will back up into sink 2. The stack is far to the left so that's why I'm trying to use this configuration. It is the easiest.

Here is a drawing and below this is an actual picture.

And for those who asked, no I cannot share one drain since the new vanity has drawers in the middle. I just haven't moved the water lines yet.

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Old 11-21-16, 01:20 PM
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You had a 90 coming out of the wall before, and that's not the greatest.
I would add a wye at the far left for sink 2, keeping it close to the stack. From the wye you can run a pipe to sink 1.
I wouldn't plan to have the stub outs come straight from the wall.
I would have both 1 and 2 stubs coming out at an angle and add elbows once the cabinets are installed.
In other words your new pipe over to sink 1 only needs to make it past the drawers and then come out at a 22.5 angle.

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