How a Plumbing Trap Can Lose Water

author This Old House   3 год. назад
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Kitchen Sink Plumbing - How to Replace a Kitchen Sink Trap

Subscribe and visit our weekly podcast for more tips https://itunes.apple.com/us/podcast/fix-it-home-improvement/id880903087?mt=2 I cover the steps to replace the kitchen sink plumbing. From the kitchen p trap and the drain pipes to the sink baskets. You will need a pipe wrench or a large adjustable pliers to work on your under sink pipes. If you are removing the old kitchen sink plumbing, have a bucket handy to place under the trap. You will want to remove the two nuts on the trap first and remove it. It will then be easy to unscrew and remove all the other pipes that need to be replaced. For kitchens with two sink bowls you want to look at the main drain pipe that goes into the wall and see if it is somewhat centered, or off to one side. If this pipe going into the wall is in the center, you will want to use a center outlet kit that has two drain pipes going to one tee that is centered between them. If the main drain is off to one side then you would want to use an end outlet kit that will put the trap under one of the bowls and allow it to be lined up with the main drain. If you are putting on new sink baskets. Put them on first and save the tail piece washer that comes with the kit. If you are keeping the old sink baskets, it is good to pick up new tail piece washers to connect the new under sink drain pipe. To replace the drain pipes for a kitchen sink, you want to start with the small tail piece that attaches to each sink basket first. To attach this pipe to the sink basket, you will want to use a tail piece washer. This is a special washer that has a flange on one side that goes into the tail piece and a flat side that sits flush against the sink basket. If your sink basket if metal, you should use a metal nut to attack the tail piece, even if you are using plastic. If it is a plastic basket, use plastic nuts. After attaching the tail piece to each sink basket you will connect your end or center outlet. I like the plastic drain pipe. The pipe will last a lifetime and is less expensive. I also prefer nylon washers rather than rubber washers. They last longer. On nylon washers, have the wider end toward the nut and the beveled edge going into the slip joint of the next part. When you line up your tubes that connect to the sink baskets, you will check to see if they are the correct size, if not, you will cut one of the tubes to size and tighten them down. With your pipes attached to the sink baskets, you will now connect the wall tube to the main drain pipe going into the wall. If it is a metal pipe, use a metal nut to attach the wall tube. The wall tube is the tube that connects to the bottom part of the trap and goes into the main drain. Now that you have your wall tube in place you can see how the trap will connect between the wall tube and the tee connecting the sink baskets. The trap can be turned and positioned to line up to both the tube coming from the sink baskets and the wall tube. If there is a gap and the tube coming from the baskets is not long enough, you will need an extension tube to connect the trap. You can cut the extension to size. If the wall tube needs to come out from the wall, you can attach an extension tube to the main drain to extend it. If you are attaching a dishwasher to the trap, you would now use a special extension with a hose fitting for the drain tube from the dishwasher. If you are connecting a dishwasher, the tube has to be above the trap. Tighten all the nuts and check for leaks.

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Company: http://applieddesignintelligence.com/ Tutorials: http://opendesignproject.org/ Second attempt at the DWV video for the free small home design. I'm hoping to get some commentary from master plumbers who go to the website and download the 3D model and 2D drawings. The viewer is free from Autodesk, and the BIM (Building Information Model) will be free when completed as well.

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Installing New Toilet

Installing New Toilet. A few tricks and tips to make your bathroom installation a whole lot easier. See how to connect the pipes and fittings to the kitchen sink, sink, toilet water lines using PEX water lines and PEX fittings. How to install a drain system, different ways to configure it for your own situation.This is the BEST plumbing solution for beginner DIY plumbers. In this bathroom training video you will learn how to use PEX and copper water lines and fittings to quickly and easily plumb your new bathroom! Bathroom Plumbing is simple to do if you have the right instructions to follow. Watch this diy bathroom plumbing video and learn a few Pro secrets for getting your sink water lines installed right the first time.

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Watch the full episode: http://www.thisoldhouse.com/toh/tv/ask-toh/video/0,,21002944,00.html

Ask This Old House plumbing and heating expert Richard Trethewey explains several reasons why a trap may be losing water. (See steps below.)

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Steps for How a Plumbing Trap Can Lose Water:
1. If a washing machine drains a toilet, it could be because the system is not vented properly and air is being pulled in through the toilet. One possible solution would be to install an air admittance vent to let air in, but not let sewer gas out.
2. Traps can also lose their water from oscillation, which means too much air from wind outside the house could be getting into the pipes and may bounce the water out of the bowl.
3. An “s” trap could also empty a trap. Those are illegal in nearly every state. The long leg of pipe attached to the trap could be pulling the water right out of the trap due to too much velocity in the water as it moves through the pipes.
4. Capillary action could also be a culprit if something is stuck inside the pipe and it is wicking the water from the toilet bowl.
5. Evaporation is another possibility with the water just evaporating into the air in a dry house.

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