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jamieDIYer
Adding a second sink to single sink vanity
jamieDIYer

I want to do the exact same thing as in this video from TOH but I have some questions....
http://www.thisoldhouse.com/toh/video/0,,20804030,00.html

I really want to do this in my bathroom. I read some other articles on doing this and they were saying that the sink drains have to be less than 30 inches apart to share a drain and p trap? Is this true? In the video it looks like these sink drains are more than 30 inches apart. If I were to do this in my bathroom, my sink drains would be more than 30 inches apart. We are trying to sell our house so I don't want to break any major codes that we will have to have repaired when we sell the house. I live in Texas. I also wanted to know if I could just do a double valve shut off instead of having to solder a tee copper part on and running more copper? I didn't know if there are flex water supply lines long enough to reach second sink or what the codes are for that. Any input would be so helpful.

johnjh2o
Re: Adding a second sink to single sink vanity
johnjh2o

You have to be kidding. What he has done is create a full S trap on the 2nd sink which is not allowed in any plumbing code. How can they get away with posting that? Any respect that I had for him or the program is gone.

dj1
Re: Adding a second sink to single sink vanity
dj1

Verify that the 30" rule applies to your city, at the building department or from a local plumber. Most likely it is, because otherwise you may have drain issues later. On the other, hand if you get a precut counter top, you will be OK.

If you are going to sell the house, why not sell it as is, with a single sink lav? What if you make the chang and the buyer doesn't like it?

About your other question: you can get a dual outlet angle valve (about $7).
I prefer two separate shut off angle stops over a dual outlet valve.

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