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Thread: pvc to abs glue

  1. #1

    Default pvc to abs glue

    Hello all.
    I searched around first regarding connecting pvc to abs and found that some folks are ok with using transition glue, but didn't see anything about using a hubless encased in concrete. So, here goes.

    My problem: I have abs drain pipe in a shower i'm remodeling. I'm on a slab in california. I have access to the complete trap, which I plan on cutting out and replacing. Problem: My drain is pvc and I don't want to wait another week to reorder an abs drain if possible.

    So, can I:

    1) put a new abs trap on and use transition glue to glue the pvc drain to the abs riser?

    or

    2) put a new abs trap on and use a fernco hubless to connect the pvc drain to the abs riser?

    I will be filling up the hole with concrete, so should I be nervous about using the fernco connection since i'll be encasing with concrete, or just go with the transition glue and call it macaroni?

    thanks!

  2. #2
    In the Trades Bob NH's Avatar
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    I have used solvent cement that is labeled for ABS and for PVC. It seems to work well. It was available at HD. I always use purple primer but many people don't like the looks of the runs on white PVC, so you can probably use clear primer.

  3. #3

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    thanks for the reply, bob.

    And, did you only prime the pvc and not the abs with that solvent?

  4. #4
    In the Trades Bob NH's Avatar
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    I have a technique for assembling plastic pipe joints.

    First, cut the pipe square, using whatever tooling is required based on your skill.

    Then I de-burr and chamfer the outer edge, and the inside edge of the pipe if the flow is into the pipe.

    I thoroughly clean and prime every surface, until the printing on the pipe is removed. Then I put adhesive on every surface; no "holidays" or missed spots.

    I assemble the joint in a way that lets me give it a quarter turn as I finish the assembly, all the way to the stop in the fitting, and hold it in place for a few seconds so it doesn't push out due to the tapered fitting bore.

    I never get a leak at a cemented joint.

  5. #5
    Forum Admin, Expert Plumber Terry's Avatar
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    You could use a shielded coupling like this, and skip the glue all together.

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