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    Replace drum trap with p trap

    Asked Nov 15, 2009, 12:22 PM 6 Answers
    How do I replace with pvc wher do I put p trap and how do I connect it up

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    speedball1's Avatar
    speedball1 Posts: 28,616, Reputation: 1911
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    #2

    Nov 15, 2009, 02:21 PM


    Is that copper or galvanized pipe? Looks like 1 1/2" Am I correct?
    You will disconnect the old drum trap amd convert to PVC using a 1 1/2" female to 2" slip adapter. Position the trap and raiser directly under the tub waste and overflow and use a 2" "P" trap with a 2 X 2 1/2" gasket to pick up the tub waste. (see image). I'm assuming you don't need directions on priming and gluing PVC fittings. More questions? I'm as close as a click. Good luck, Tom
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    tazschwer's Avatar
    tazschwer Posts: 3, Reputation: 1
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    #3

    Nov 15, 2009, 03:12 PM

    It is inch and a half copper and 2 inch vent pipe.. were the drum trap is will I need a furnco and a tee to connect the copper pipe and the gav. Can I eliminate the vent pipe. I should start at the tub and work back torward the drum pipe
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    massplumber2008's Avatar
    massplumber2008 Posts: 11,883, Reputation: 1116
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    #4

    Nov 16, 2009, 05:30 AM


    Hi all...

    I drew up a quick diagram of how I would do this Taz. You will want to cut the 1.5" copper pipe back at least 2 or 3 feet to get all these fittings into place. Also note that here, I think you have 1.5" copper pipe and 1.5" galvanized pipe...not 2". Here, 1.5" copper is much smaller than 1.5" galvanized or PVC pipe.

    You will be using MISSION CLAMPS (also called shielded or proflex clamps) to transition between the different pipe materials... see image. Do NOT use the fernco type of clamp here... not appropriate.

    The 1.5" PVC x 1.5" trap adapter will transition between the PVC and the tub waste and overflow assembly. There are other ways to connect all this including another mission clamp that transitions between 1.5" pvc and 1.5" tubular metal... check with local plumbing supply house for this.

    Dry fit most of this up and get a feel for how the trap will align. Do NOT use a sanitary tee fitting here... WYE fitting only...

    Let us know if you have questions...

    MARK
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    tazschwer's Avatar
    tazschwer Posts: 3, Reputation: 1
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    #5

    Nov 16, 2009, 04:26 PM
    Quote Originally Posted by massplumber2008 View Post
    Hi all...

    I drew up a quick diagram of how I would do this Taz. You will want to cut the 1.5" copper pipe back at least 2 or 3 feet to get all these fittings into place. Also note that here, I think you have 1.5" copper pipe and 1.5" galvanized pipe...not 2". Here, 1.5" copper is much smaller than 1.5" galvanized or PVC pipe.

    You will be using MISSION CLAMPS (also called shielded or proflex clamps) to transition between the different pipe materials...see image. Do NOT use the fernco type of clamp here....not appropriate.

    The 1.5" PVC x 1.5" trap adapter will transition between the PVC and the tub waste and overflow assembly. There are other ways to connect all this including another mission clamp that transitions between 1.5" pvc and 1.5" tubular metal....check with local plumbing supply house for this.

    Dry fit most of this up and get a feel for how the trap will align. Do NOT use a sanitary tee fitting here...WYE fitting only...

    Let us know if you have questions...

    MARK
    Thank you taz
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    speedball1's Avatar
    speedball1 Posts: 28,616, Reputation: 1911
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    #6

    Nov 17, 2009, 05:27 AM


    can I eliminate the vent pipe.
    Not and stay in code. However, having said that none of the earlier 20's and 30's houses back in Wisconsin had tubs that were vented. They all, including the house I grew up in , vented through the tub trap. If a permit was pulled a vent's mandatory.
    Good luck, Tom
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    neverguess's Avatar
    neverguess Posts: 9, Reputation: 1
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    #7

    Nov 17, 2009, 06:15 PM

    New Hampshire now allows air admittance valves to vent fixtures. They must be accessible for replacement, if they fail, but it saves a lot of trouble of having to vent the fixture. "Studavent" is a brand name, and they should have a web-site for ordering. They do sell PVC drum traps as well, that is used to replace the old failing ones.
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