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Plumbing question - how to connect 1 1/2" pipe to 1 1/4" pipe?

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We recently put a different sink in a bathroom in our house. The pipe coming out of the wall is 1 1/2" and the sink drain pipe is 1 1/4" (plastic pipe not metal). Is there a connector or set of parts that can be used to connect the two? Where can I find this type of item (big name home improvement stores don't seem to have the right parts)?

Thanks!

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  1. The reducer coupling is certainly the answer, and perhaps you have plumbing supply stores local to you with a larger variety of parts, and or more specific to your needs.

    Just my two "sense"


  2. OH SURE THEY DO.  Its just a 1 1/2 to 1 1/4 reducer.

  3. in the slip joint (trap adapter)where the trap connects to the house WDV there is a plastic seal. There are two sized rings that will both fit this connection.one is for 1 1/2" pipe and the other is for 1 1/4".

  4. The home improvement store does have the right parts.  Look in the plumbing section where you buy traps for your sink and extension tubes for sink drains. In the package with these parts are 2 washers. One is the proper thickness for connecting 1-1/2" to 1-1/2"  and 1-1/2" to 1-1/4" .  Thats all you need.

  5. If the threads are good on the stubout, (the pipe coming out of the wall), use a 1 1/2 to 1 1/4 slip joint nut and washer. This is first choice.

    If not, go buy a Fernco, or Cantex rubber trap adapter at any hardware and most lumber stores. Size the adapter accordingly. You should look for the adapter that will work on 1 1/2 ip size to 1 1/4 tubular size.

  6. yes there are connectors out there you should find a good plumbing store and ask for a reduction connector for 1 1/4" to 1 1/2" pipe good luck :)

  7. The big home improvement stores definitely have reducers...

    from what I am guessing...(to try to simplify) the piece you will need has a s***w connection at the top of it..will only be about 3 inches long...straight...looks a bit like the pipe has a cap on it but the cap has a hole in it, that is where the drain pipe goes and you tighted it

    if at all possible take the drain pipe with you to make sure you get the right size

  8. look for a reducer-big store should have it not your local plumbing store will

  9. buy 1 1/2 to 1 1/4 reducer coupling

  10. The 1 1/2 " pipe should have a male adapter on it. There are 2 sizes of washers that come with your new sink trap. Use the larger on for you connection.

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