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  • Drum trap replacement

    Recently bought a 1960s ranch on a slab. Upon gutting the kitchen (which backs up to the bath), I found that there is an original drum trap in the "pit" in the floor under the tub. The tub doesn't run slowly, but since this area will be only accessible through an access panel I will install in a cabinet, I am thinking this is the right time to do something about replacing the trap with a P trap.

    In the photos, you can see that there isn't a lot of room under here to work. Aside from that, the 90 coming off the bottom of the trap connects into what appears to be 1.5" copper (or something else?). Here is my concern:

    1. I am fairly handy, however I am concerned about damaging the other end of that pipe that goes into the slab. Would it be better to just use a Fernco or similar fitting rather than torquing that pipe and risking it?

    2. If I do install a P trap, is the stack (about 3 feet away) sufficient to vent the tub? Or would I need to add a vent after the P-trap?

    3. Should I just forget all this, pick up the phone and call a plumber? (I do enjoy these types of projects and challenges!)

    So, what should I do? Is there a better way to loosen that 90 as to not cause damage to the pipe going into the slab? I appreciate any and all advice!

    http://j.imagehost.org/view/0200/CIMG1190
    http://j.imagehost.org/view/0374/CIMG1191
    http://j.imagehost.org/view/0396/CIMG1192
    http://j.imagehost.org/view/0168/CIMG1186
    Last edited by rmc511; 01-07-2011, 12:16 AM.

  • #2
    Re: Drum trap replacement

    My 1 st concern would be the wood rot and mold.
    I can build anything You want , if you draw a picture of it , on the back of a big enough check .

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    • #3
      Re: Drum trap replacement

      Unless you can vent the P trap you are better off to stick with the drum trap. An unvented P trap can siphon, the drum trap won't.
      sigpic

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      • #4
        Re: Drum trap replacement

        Originally posted by NHMaster3015 View Post
        Unless you can vent the P trap you are better off to stick with the drum trap. An unvented P trap can siphon, the drum trap won't.
        stupid question as I wish I had a Pick But at my best freinds house in NH thats exacly how the drain is piped to the tub but with a p-trap on both tubs his house is under 10 years old no vent I thohgt ok what the over flow acks as the vent
        SMELLS LIKE $$$$$$ TO ME

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        • #5
          Re: Drum trap replacement

          first remove the wood as I am sure the concreat is cured then try and cut the drum trap just befor threads to try and spin it off reamember to hold back on the other pipe also depens on room if not if not fernco it and us a 2" P-trap as that drain looks like its 2" and reduce as it returns going up to tud with 2"x 1 1/2" bushing reducer hopefully you can use PVC and at this point I would also rec. a new tub shoe and overflow as there not that exp. and you have ampl. axess
          SMELLS LIKE $$$$$$ TO ME

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