Queston on replacing bathtub drum trap - questionable existing?

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by mckeand13, Sep 5, 2007.

  1. mckeand13

    mckeand13 Engineer

    Milwaukee, WI
    I'm interested in replacing the drum trap on my bathtub with a PVC trap. Was there a point in drum traps? I replaced one at my last house as well because it was all corroded and closed up.

    Anyway, take a look at the pictures. The tub drain comes down, elbows, and then goes into a brass "tee" with threads on each side. The one coming down just looks like it's got a piece of brass pipe shoved in there and sealed. It just doesn't look right.

    Shouldn't some type of fitting come off the bottom of the tee, transition to pvc, and then continue on to the trap?



    Last edited by a moderator: Apr 6, 2011
  2. cwhyu2

    cwhyu2 Consultant

    Cincinnati OH
    Drum traps were used to catch stuff and cleaned out every now and then.
    By all means replace it with a P-trap.
  3. mckeand13

    mckeand13 Engineer

    Milwaukee, WI
    Now that I think about it a little more, it seems that the brass tee should have a tailpiece with a seal coming out of it. Like a sink drain.
  4. BAPlumber

    BAPlumber Plumber

    Vashon, Washington
    looks like a normal brass waste and overflow to me. I'd just replace the drum trap with a p-trap.
  5. GrumpyPlumber

    GrumpyPlumber Licensed Grump

    Licensed Grump
    The trip waste looks fairly new, the standpipe looks like galvy..get ridda that, it'll rust closed before too long.
    You should be able to loosen the desanco nut (slip nut) at the top of the standpipe, then cut the copper and take it all out.
    Replacing with a p-trap should be a snap, just use a mission clamp from the copper to PVC.
  6. hj

    hj Moderator & Master Plumber Staff Member

    Cave Creek, Arizona

    There is supposed to be a "trap connector fitting", (it goes by many different names depending on which part of the country you live in), on the galvanized pipe and then the tubing slipped into it. When that was installed, (I never used green drum traps mine were always black), the did not have PVC and even if they did, inspectors would not have allowed switching from material to material for no good reason.
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