How to Connect Waste Tubes for Garbage Disposer

    Published: 06-16-2009
    Views: 165,442
    Handy man Joe Wise demonstrates how to hook up the waste pipes coming off the disposal.

    Joe Wise: Hi! My name is Joe Wise. I am owner of Built Wise Construction in Orlando, Florida, and today we are going to go over how to install a garbage disposal. Now we are going to hook up the waste pipes coming off the disposal. Now this is something that I usually get a lot of different types of pipe for, you look and see basically what you need, then buy couple of extras. I always buy one of these flex hose because you can normally use it in two or three different places. A long supply line like this, different types of P-traps depending on how and what are you connecting to on the wall. And then you just have to have patience and fit it altogether.

    So right now, we are going to hook it up. We are going to start it with the discharge tube on the disposal. Now this discharge tube on the disposal has a rubber gasket that you put in place right here. You put the plates over your pipe like that, put it right over there like that. Then we are going to put the flange over and put the screws in. Careful not to cross thread your screws, you want them to go nice and straight. You should be able to hand tighten them till you get on in there a little further. And try to put this gasket on their straight, so you want to tighten it a little bit at a time on both sides. Give it a nice flush appearance cross here, so just a nice seat in there, so it doesn't leak. What that does is that water pushes out against that plate, the flange plate, gives you a nice water tight seal. So it's now done right in there. I am going to put a plastic nut and connectors on here. I am going to shove that all the way in and I am going to take the piece of flex hose fitting, put that on there and tighten it up. This time I'll leave it just hand tight just a little bit loose for now and we'll comeback and snug it up in a minute. Now we are going to come up to the sink strainer and we have a dish washer on this, so we have to have a dishwasher discharge tube. So we have bought a piece that has discharge tube built in. When I attach this to the flange, I am going to point the discharge tube towards the dishwasher pipe that's coming out. I am going to hand tighten these. Then we are going to come down with a section of pipe, join into our piece that's coming over from the disposal. Slip it underneath the tail pipe. Sure we are not cross turning these things, really easy to do. Go ahead and connect that. Then we are going to put our P-trap on right here. Again, don't cross thread these or they will leak. Get all those hand tight, leaving them just a little bit loosely, we are just going to see how everything is fit, and make sure it does, and looks like it's under a bind here. Then I am going to go back and tighten these up, and then how I am going to do is hand tight them. If you strip one off, it's going to leak. So you don't want to strip it off, you just want to get it hand tight. With those connectors, there's a chance to work. Now we are going to put the dishwasher disposal tube back on. As you can see we had to go get another end piece from hardware store and brought on to this hose. And gave this a little bit of round so we can put it on right over there. We'll snug that up, just like that. Make sure that's not turning. And now we are going to finish up this garbage disposal installation by turning the electricity back on, testing that the motor is running and we have it wired properly, and that we don't any leaks in our waste system.