– Hello my DIY friends, Jeff here again, and today we have a very useful video for you that solves a very common problem that a lot of people have with the traps, whether it’d be under your kitchen sink or under your bathroom sink But I’m willing to bet you’re here today because you have a leak right here at this spot here on your P-trap under the kitchen sink, and you’re probably wondering, why is it leaking here at this connection point, right at the P-trap connection point Why is it leaking right where the nut is where the threads are and it connects together there So today we’re going to show you how to fix that and let’s get right into it Okay so today we’re going to replace the kitchen sink P-Trap with this one here This is a transparent one This is, kind of cool. You’ll like this Because when we’re done installing it, and we set it up and get it filled with water, you’ll be able to see exactly how the water functions inside the P-Trap And, so, remember this is a kitchen sink P-Trap so we’re using one and a half inches Had this been a bathroom vanity, the bathroom sink P-Trap uses one and a quarter, so make sure you get the right ones So, usually when you go to Home Depot, the green ones are for the bathroom The purple bags are for the kitchen, alright? So let’s get started on that Alright, so here you can see we have two P-Traps going here One is coming from the garbage disposal and going to the street drain and then the other one is coming from the sink itself That’s a P-Trap And it may not look exactly like a P but it really is It’s just twisted around backwards there, because that’s due to the architecture of the plumbing in here that’s how it had to be routed But we’re gonna show you why the P-Trap leaks right here at this nut And so to understand that, let’s take a look at the architecture of the P-Trap This is what the P-Trap looks like when you have it out and, you know, this is how it’s supposed to connect altogether So, the water comes down the drain, enters into the P-Trap dip, and it comes out of the P-Trap outlet and into the P-Trap arm, where it connects in and goes to the waistline going into the wall Now, the waistline side has a gasket, usually rubber, so that when this nut is screwed into the threadings on the waistline, it forms a water tight seal So how do we get the water tight seal here, and why is there water leaking? Remember the purpose of a trap Why is this called a trap? Because it traps the water here, so that the sewer gases can’t come up in your house A P-Trap is required by code So every house should have one on every fixture basically So a lot of people erroneously think that the water just sits right here, but it doesn’t The water, sits from this point right here See this bottom edge of the trap arm here? At the bottom of the crown here? This is where the water level sits inside there so it comes up to about here And it goes all the way down and around to about the same level on this side here So this entire trap, all the way including the nut and past the nut, is full of water That’s the part people don’t understand This nut is immersed in water on the inside, you know, the whole area inside the pipe there has a column of water in it And in fact, in the plumbing rules here, which I have a copy of, here This is the uniform plumbing code here and in this plumbing code here under section 1005.0 under the trap seal, it says that it must be not less than two inches and not more than four inches So the trap seal is this column of water that’s going to be right in here, alright? So it has to be two inches minimum from here, to here So, when you buy these kits they’re already pre-formed so that you’re satisfying that rule So let’s unscrew this and let’s see why these always want to leak right there This is the thing that I don’t like about traps Because when you look, why does this end get a nice rubber gasket? But the end here, where the where the trap pipe here, the trap arm, connects onto the outlet of the trap, why is it just an angled piece of plastic? You see that? That’s all you get there is an angled piece of plastic that matches a sort of concave shape there, you know, a little volcano bowl type effect, where it just lands in it But you see that, you see how you can be crooked there? These are supposed to be perfectly level when you screw this in together and if it’s not, you’re going to have a leaks So that’s one reason it leaks Another reason it can leak is because, I’ve seen it where these nuts are cracked as well And they crack because people get these handyman Joe’s that show up and tighten it with their with their channel locks and they tighten it way too tight and it (makes cracking sound) and it cracks So these are really meant to be hand tightened I go about as far as I can go, and then you can use a wrench to
just go a quarter of a turn, you don’t need to go any more than that Cause look, you can see it’s nice and tight right now And any time you can get this part tightened together to this part and make sure it’s nice and perfectly level and doing it’s job perfectly, before you hook up the P-Trap, that’s even better Sometimes you can’t and you just have to do them all loose You know, make sure everything’s loose when you connect them all up, all the pieces together But, I try to tighten this one first I make sure that this guy is satisfied first before these other two are because these other two are gonna have gaskets They’re not as finicky as this particular connection nut is right here on the P-Trap So, that’s why to me, this one’s the most important one to get right, right off the bat Tighten him down first, and once he’s happy, the other guys will conform cause they have a lot more room to play with, with these rubber gaskets Okay so let’s get that done Okay so I wanna show you this very useful tool that I like to use here This is called a three-way plumber’s wrench So this can handle three different functions It handles large hex nuts right here And this big hook part here will handle the big nut around your sink drain in the kitchen under the sink But this is the one I’m looking at right now This is pretty cool here So what we do here with this one is this fits around the wing nuts, so it’s acting like a wing nut wrench here So you see how that little groove right there fits around the winglet? And the other one just fits against one of the little knobs there, so that allows you to just loosen it like that. See, very easily And sometimes people will put them on real tight and these dig into your fingers And if you’re older, maybe you’re disabled, you have weak hands, you’re not gonna be able to undo it, so this is gonna have And it’s also great for when you go to tighten it, because you flip it the other way and then you tighten the nut like that So after you’ve hand tightened it, you can use this to go another quarter or a half a turn to make sure that you’re in there nice and solid, okay? Alright so here we have the trap arm So remember we’re putting in the transparent P-Trap now And so I’ve already got it sized to fit in here, right? So what you do first, is you got to put on the first nut, and you’ve gotta put it in with the threads facing down like that cause it’s gonna come down and tighten down to the bottom of the trap here See it’s gonna mate up to this piece So that goes on first And then, remember, this is gonna mate onto the wall over there, so this nut now comes on second And this is the part everybody forgets and this is what causes a leak over here with this part They forget to put this gasket on And they… sometimes they get the direction wrong You have to put it on so that the flat part of the washer is facing the nut, see, like that And the reason why it’s angled is because the piece that it connects into in here is angled And this is what fits the water-tight seal, makes it nice and tight in there, so that when you screw this onto that pipe, it snugs everything together and it pinches against this washer here So that’s why that needs to be there And this doesn’t need a washer because they sort of have it, their gasket is this right here It’s the shape of the plastic Alright so now we’re going to join these two together now You see how it’s important to have this thing perfect, like, absolutely perfect, cause if this is off, like let’s say the alignment’s off, see how the water can slip out right there, cause this joint is going to be underwater, as I mentioned before So we have to make sure that that’s really perfect there We’re gonna just loosely tighten them together for now And once we get the whole thing together, we’ll do a final tighten on it Just like that Okay so you see how the gasket comes in here and it seals around the thread there like that? And so we’re not gonna, we’re just gonna loosely start it We’re not gonna tighten it yet, cause this is the one that’s the most important one to me I wanna make sure that he is absolutely level I’m gonna unscrew him again and take a look at him See, cause he’s not really lined up that good So I wanna pull him back out a little bit You wanna make sure these two are just absolutely, perfectly level, like that see? Then you can run your nut back down Now I’m gonna tighten this one This is the most important joint cause it’s the one that is the most finicky and it has to be fully aligned So I tighten as much as I can with my hand Tighten this one first and he’s satisfied Now we’re going to
tighten these other two So these two have the rubber gaskets on them, those washers And so they’ll tighten up pretty good on their own, pretty easily Just do about a corner of a turn, like that And I don’t know if it’ll let us in that way, or if we have to come in from the bottom Okay, so those are in nice and tight So now we’re ready to turn on the water Okay what I usually do is I set the water on hot, cause I wanna run hot water through here for a few minutes to get everything expanding and get them all used to each other, get all the parts to say hello and everything So let’s do that, and we can watch for any leaks Okay so there I’ve let the water run for a few minutes Now it’s coming through It’s all hot water at this point (water rushing) And as we look up top here, there’s no moisture around the drain, which is a good sign, that means we sealed it up nice And we solved the link up here at the kitchen drain But our testing is not done yet Alright so now that we know that at least with the water running in it we’re doing okay What I want to do now is fill up the sink with water and let the whole thing go That’s another good test to do here for your leaks Alright, so I put the plug in there, and we’ll let the kitchen sink basin fill up with hot water here, and then we’ll release the water and let it flush down the drain and down into the P-Trap and we’ll see if that rush of water makes it through okay Okay, so our basin is filled with hot water And now we’re going to let it all go Just watch it rush through there, through the P-Trap (water flowing) And there we go, so it’s all done So now after a little bit, you’ll see some of the water settle back here See how it’s the little air bubble up top there is growing? It’s setting the level of the weir So the weir is what we call this top level of the water here Now in this particular case, we would actually like to see it a little lower And the reason why it’s not, this should be up higher but there’s really not much you can do right here because of the way the plumbing was done here The pipe comes out horizontal from the wall You really should have a little bit of a decline down towards the wall, not a lot, only a quarter of an inch, per twelve inches So, but you can at least see it, you can at least get the air behind water So you can see now here from looking at this, you can see why you sometimes will have water leaking out of this nut, because this whole column right here, is underwater This column right here, from the weir, to the upper dipper, the upper dip right here So from this column right here is what protects you from all the methane gases coming in from the sewer system, from the drain The gases are right up until this point right here, and then the water stops it This column of water is what stops it So sometimes when you winterize your house and you leave and this evaporates and that’s why you can smell sewer gases when you come back, if that evaporates and you just fill it right back up with water again by running the water for a few seconds here But so you can see the water level is like probably right around in here, up to here, alright? So anyway, there’s no drips, but we’re not quite out of the woods yet, and I’ll show you why So I always like to put a little piece of paper towel under it, or you can also use newspaper, and it will let you know if there is a leak, even if a drop of water comes down Because just because we ran this test and flooded it and everything and it works, doesn’t mean we’re out of the woods yet Because now, the long term test comes over a few hours, or even overnight, is any water going to leach out of this connection right here, because this connection on your P-Trap outlet, where it meets the P-Trap arm, is underwater So we wanna make sure that that’s not leaching out overnight So that’s the part you have to monitor now to make sure you’re okay, alright? So we’ll let that go and let it run overnight and we’ll come back and check on it tomorrow Okay, so now that this leak is done,
I think our mission here is complete We have the new P-Trap in place here So if you liked this video, we would appreciate if you give us a thumbs-up down below Let’s us know that you like us And then don’t forget to hit the subscribe button so you can come back and watch over 200 videos that we have uploaded, covering all sorts of failures and repairs around your house and all sorts of remodeling ideas for you And then when you hit the subscribe button, make sure you hit that little gray bell icon so that you’ll be alerted whenever we upload a video and you will never miss a single video So that’s it for this week folks We’ll see you on the next video Bye!