Moving sink drain

wwkayaker

I am replacing by vanity and the sink will be positioned about 8 inches to the right. Can I use an extension to attach the new sink to the current drain line?

VIPlumber

Sure you can provided the new sink is the same depth as the old one and you can maintain the proper slope of 1/4" per foot.

wwkayaker

I have been rethinking my drain assembly and I need to clarify my plan. So, the tailpipe comes straight down into the ptrap. The ptrap is 8 inches to the right of the waste pipe. After the ptrap, can I use a 45 or 90 elbow or two to connect the extension to the waste pipe? I think by cutting the waste pipe shorter and adding a 45, i should be able to run an extension from the 45 into the ptrap.

I read about code being no more than one slip joint between the ptrap and waste pipe and I am unsure if that applies to what I am trying to do. For what it's worth, although I would be using an angled joint, I am not planning to change the horizontal run from the ptrap to include a vertical section which I think would make an s trap which I have read are illegal.

Thanks.

TheEplumber

Yes you can use the fittings and offset the trap arm but use pvc/abs with glued fittings- only 1 slip joint allowed in the horizontal

__________________
When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions

wwkayaker

Thanks, it makes sense to me now.