U-bend pipe’s under kitchen sink’s help transfer waste water to your home’s sewer line and contains water in its neck that keeps sewer odors from escaping into your home. The pipe, also known as a trap, contains two nuts securing the pipe in place and is removable for cleaning and removing any debris. Like other plumbing repairs, gather all of the tools you need for removing the U-bend pipe before starting the repair process.
6 You can also clean your kitchen sink's U-bend pipe using a liquid commercial drain cleaner, but the chemical may or may not flush out all of the debris present in the pipe.
Dump any water present in the U-bend pipe into the bucket. Place a piece of flexible wire or stiff brush into the pipe and pull it in and out to clean the inside of the U-bend pipe.
Turn on your kitchen sink's faucet to check for leaks and to fill the U-bend's neck with water for odor control. If the U-bend pipe is leaking around the nuts, tighten the nuts with the plumber's wrench.