Regluing Old PVC Pipe Joints

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Old 10-17-20, 04:57 AM
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Regluing Old PVC Pipe Joints

I have a sump pump coupling that is leaking at the bottom joint and spraying out. Can I get the pipe out of there cleanly enough to insert and re-glue a new piece? I figure I'd cut the pipe below about 10" and couple the new piece in place. How does this sound? If OK, how do I clean out the old joint? Any other suggestions? Thanks!


 
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Old 10-17-20, 05:00 AM
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You have to remove all the glue from the joint. Not too big of a deal on the pipe where you can scrape/sand it smooth but can be a challenge inside the fitting. Any reason you can't just cut it out and install new?
 
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Old 10-17-20, 05:05 AM
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I don't think there's enough room after we'd cut it out to install a new coupling. The top joint butts right against the underside of the deck.
 
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Old 10-17-20, 05:37 AM
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Is this for a sewer or a downspout?
 
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Old 10-17-20, 05:42 AM
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What we are looking at is for a sump pump...
 
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Old 10-17-20, 06:30 AM
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Is never a good idea to re-glue PVC pipe, the solvent in the glue melts the material so that the two pieces flow together, any left over glue can interfere with the process and produce a weak joint.

Plus the cost of fittings is not worth the effort and time, just cut it all out, new fittings, new glue and be done with it!
 
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Old 10-17-20, 06:34 AM
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Cant see what the rest of that line (above and below) does or where it goes which makes a big difference. You can't cut out and replace a section of pvc when neither side has any play. (That's what a fernco coupling is for.) And you also can't reuse a joint that has been glued or partially glued. And the outside of the pipe looks pretty cruddy... as cheap as pipe is i would replace as much as you need to, rather than trying to clean it, and replace more than just 10".
 
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Old 10-17-20, 07:03 PM
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I agree with the others, removing and re-gluing PVC is usually ends up with a poor outcome.

BUT... with the way it looks, it's possible it was never glued. Usually a poorly glued joint ends up in a tiny leak, not as much of a leak as you have there. Which makes me think it was just pushed in.
Also, with that much of a leak, I would check where it goes from there. I'd think there's probably a back-up or clog in the pipe further down.
 
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