How to Remove the U Pipe Under a Sink


Removing a U pipe from underneath a sink is a simple do-it-yourself task. The U pipe works to level the water pressure within the pipes of your home. Also, water sits in the bottom of the U pipe, which prevents any odors from coming back up through your drain pipes.

Things You'll Need

  • Plumber's wrench
  • Loosen the slip nut at the top of the U pipe. The slip nut helps compress two lengths of drain pipe together. Use a plumber's wrench to loosen the nut.

  • Loosen the second slip nut on the back side of the U pipe, again using the plumber's wrench.

  • Remove the U pipe once both slip nuts are loosened.

  • Install the new U pipe, checking the other pipes for cracking and rusting.

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