Need To Lengthen Under Sink Drain Pipe

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Old 02-24-20, 03:08 PM
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Need To Lengthen Under Sink Drain Pipe

My 40+ year old cast iron bathroom sink is showing rust and to replace it with one made of vitreous china. The sink that's closest in size to the existing sink has a drain that is about 1.25 - 1.5 inches closer to the front of the sink. This means I would need to lengthen the drainpipe coming out of the wall an equal amount. It is 1.25 dia. black pipe that is glued to a fitting. I would have to cut it and add some kind of fitting to the pipe but I don't know what kind I should use.
 
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Old 02-24-20, 04:18 PM
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Typically you would need to replace everything from the wall rough in out. That's what they make slip joint traps and tail pieces for. Post a picture if you want specific advice. You can see it, we cant.
 
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Old 02-24-20, 06:42 PM
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It has 1 1/4" pipe coming from the wall just to the right of the sink drain and extends past it. That connects to the sink with 1 1/2" slip joint P-trap.
 
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Old 02-24-20, 06:50 PM
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Another view.
 
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Old 02-24-20, 06:54 PM
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The pipe is pretty close to the side of the drain.
 
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Old 02-24-20, 07:00 PM
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Its hard to tell but it looks like you need to cut off the piece that is coming out of the wall, (I assume that's 1 1/2" pipe), leaving as much of it as possible, then glue a hub x sj adapter onto it. Then everything from that point to your new sink can be run in new slip joint fittings. They make extensions and tailpieces of various lengths that you can cut to size and add to your drain and p trap.
 
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Old 02-24-20, 07:14 PM
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Okay, thanks. I guess it is 1 1/2", don't know why I thought 1 1/4. So a hub x sj adapter. I'll go the big box store and know what to look for now. Thanks.
 
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Old 02-24-20, 07:23 PM
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Here is a link if it helps.

https://www.homedepot.com/p/NIBCO-1-...D112/100344620

You will need some glue.
 
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Old 02-24-20, 07:42 PM
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Thanks. I was just looking at that same thing at H.D. website and wrote down all the info... I'll be sure and get some glue too.
 
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