How to Change the P-Trap Assembly

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The P-trap assembly on your sink traps waste and prevents sewage gas from escaping. Change a P-trap with the help of this free video presented by a professional and experienced plumber.

Part of the Video Series: Plumbing Advice
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Video Transcript

I'm Terry with Towers Murray Plumbing, Murray, Utah. Today, we're going to show you how to replace a P-trap underneath your sink. Things that'll be needed, a small bucket to catch the water, a pair of water pump pliers, and a new P-trap. Place your bucket directly underneath the P-trap. Start with the lock nuts, you'll get a little bit of the water out. Remove your first slip joint nut, remove your second lock nut. And at this point, you P-trap maybe a little stuck, give it a little bit of a pull. You should be able to pull it right down, off of that. Empty the water out of it, and you can start on the waste arm. Same thing, just has an inch and a half, or an inch and a quarter nut, remove the arm. Now, we're ready to reinstall the P-trap. Take your new waste arm, place the slip joint nuts on, with, along with the washers, appropriate washers for that P-trap. The first thing you want to do is, start with the waste arm. Place it in, take your P-trap, and use it as a guide, so that you're able to adjust it to the right position. Go ahead and install the new slip joint nut and washers, on the down pipe. And make your final adjustments, tighten the P-trap into place, both lock nuts, hand tight. Pliers, about a quarter turn, as usually, all you'll need with these. And there's your P-trap installed. I'm Terry with Towers Murray Plumbing, Murray, Utah. We've showed you how to replace a P-trap under a sink.


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