Should I replace kitchen drain line (glav to ABS) during remodel?

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Old 09-20-13, 05:24 PM
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Should I replace kitchen drain line (glav to ABS) during remodel?

We are doing a full remodel on our kitchen and I am the plumber! House was built in '47 so drain lines are over 60 years old. They look & feel solid but should I replace the drain adapter/elbow/horizontal pipe (about 10") with ABS while I have it all accessible? It is slightly off-center (an inch or two) as we've installed a new window but a flex sink drain would also accommodate this. I'm just thinking that ABS is less susceptible to clogging but I could be wrong.

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Old 09-20-13, 07:07 PM
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Steel pipes at some point are going to close up on the insides, and leak.
PVC will work just as well.
If your worried about clogs do not use a flexible drain.
 
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Old 09-20-13, 07:44 PM
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but a flex sink drain would also accommodate this
Not to code... Cant use it AFAIK....

I replace the drain adapter/elbow/horizontal pipe (about 10") with ABS
Is this whats in the wall? Is there a tee for the vent? If no vent then you should bring it up to code... Sounds like you have an S trap set up.... Thats not to code anymore either....
 
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Old 09-21-13, 05:39 AM
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Since you are doing other work in the area I certainly would redo the drain lines with ABS or PVC. As mentioned already steel pipes do rust from the inside out and quite often the bottom will rust completely through and start to leak. At 60 years your drains could be near the end of their life. And like Lawrosa mentions since you are redoing the plumbing it should be to the current codes which are very different than when your house was built. It can sound like a major PITA but plumbing to the modern codes will give you a drain system that works better and more reliably.
 
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