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Old 08-05-2009, 10:42 AM   #1
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Connecting PVC coupling to threaded metal pipe for sink drain


Hello, this is my first post so patience will be surely appreciated. I am trying to connect a PVC coupling (smooth on one end and threaded on the other) to an old piece of treaded metal pipe that is jagged and not threading properly. I tried to clean it up with my Dremel, but to no avail, it did not work.
I tried attaching original piece to it and still did not work. I had a piece of PVC that came with the box with extender and J trap. Can I use primer/glue on PVC and attach to metal pipe? Is there another remedy? HELP! I have been working on other "issues" with this pedestal sink installation in an ALL tiled wall/floor bathroom for days now.
thank you.
Teresa
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Old 08-05-2009, 02:45 PM   #2
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Connecting PVC coupling to threaded metal pipe for sink drain


Assuming the metal pipe is the one coming out of the wall, remove and replace it. You cannot glue PVC to metal and get a good seal. The pipe is probably only a few inches long and threaded into the verticle line at a fitting.

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Old 08-05-2009, 04:58 PM   #3
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Connecting PVC coupling to threaded metal pipe for sink drain


THIS IS WHAT YOU NEED TO CONNECT PVC TO STEEL PIPE

http://www.fernco.com/plumbing/shiel...flex-couplings
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Old 08-05-2009, 06:09 PM   #4
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Connecting PVC coupling to threaded metal pipe for sink drain


Quote:
Originally Posted by MACPLUMB View Post
THIS IS WHAT YOU NEED TO CONNECT PVC TO STEEL PIPE

http://www.fernco.com/plumbing/shiel...flex-couplings
Teresa, Welcome to the forum
MAC has the best solution. Take the plastic part to a plumbing supply house and explain the problem. If the metal portion is the same diameter, this should be an easy to find coupling. I would go to a supply house rather than HD because HD or Lowes is much more likely to carry only the larger couplings.

Here are some more examples. Note there are sizes available with different in & out sizes.
http://www.google.com/products?rlz=1...title&resnum=4

Measure the outside diameter of the metal end before you take the plastic piece to a supply house.

Don't be reluctant to walk up to a parts counter with a bunch of grungy plumbers. Years ago I was at the parts counter at a plumbing supply house in Santa Monica next to a good looking blond who turned out to be Barbara Streisand buying plumbing parts.

Let us know when you find a solution.
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Old 08-05-2009, 09:47 PM   #5
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Connecting PVC coupling to threaded metal pipe for sink drain


sir, go buy a no-hub band and fix your problem easy and cheap. you probably have 1 1/2" pipe stubbed out. it possibly may be 2" but you can measure it. ask for a fernco no hub-band but any no-hub band will do. also buy a 1 1/2" trap adapter that will go in one end of the band and place the other side of the band on the pipe giving you problem, tighten the nuts and, presto, now you are ready for your p-trap. if you have a little 100% silicone handy put a little inside the band on the threaded pipe side for insurance, but probably not necessary. your welcome, buddy builder
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