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Bathroom drain pipe has no threads

The drain pipe in the bathroom wall has no threads to connect a new pipe and is leaking since we installed a new sink. Is there any kind of ''christmas tree'' shaped adapter, something that would wedge into the drain pipe and have threads on the other end that goes to the sink basin. We cant afford to rip out the wall and replace the pipe right now, anything that could get us through until we can have it fixed properly?

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I 'am having a hard time visualizing this problem ? is your drain line a PVC pipe or is it the old style brass that was once used?

Posted on Jul 26, 2009

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As long as the pipe inside the wall does not leak, then yes , you are on the right track. Bathroom drains are typically 1 1/4 diameter. A large nut and washer would go over the pipe coming from the wall. The nut and washer would mate up with a pipe that has threads on it. Typically, a trap is what connects to the wall drain, and the pipe from the sink connects to the trap. You need a trap in the setup so sewer gasses do not enter up through the drain. The trap "traps" water at the elbow which prevents these gasses from escaping.
There are drain parts for both brass and plastic pipe. Also, there are numerous configurations of drain piping that are available (home depot, Lowe's). Once you look at the various configurations, I think you will understand how the drain piping setup works. Once you put the pipes together and you have a joint leak, try using some Teflon pipe tape around the joint to seal it. Wind the tape in a clockwise direction (tighten). The plastic washers have a taper or bevel side which seats into the inner bell of the mating pipe.
I hope this is helpful...

Posted on Jul 26, 2009

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