MDPE MAINS WATER PIPE – ATPLAS CHAMBER – Plumbing Tips

Posted on: February 10, 2017 by in Plumbing Videos
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MDPE MAINS WATER PIPE – ATPLAS CHAMBER – Plumbing Tips


All about MDPE mains water pipe. How to fit on your water mains coming into your house and fit an ATPLAS chamber. We show you how the couplings work and how to fit to imperial iron thread. We show you how to measure and cut the pipe and how to make sure it’s clean. We also show you how to use the inserts to prevent the pipe from collapsing.

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Hold tight, and welcome to this Plumberparts.co.uk all about these lovely, little fittings. We’re gonna go to that video any minute now,
but before we do, I’d love it if you could please subscribe to this video by clicking on the link that’s appearing now. Those links are available throughout the video for you to click on any time. And as I’ve said before, they’ll completely enhance your whole feeling of this video. Anyway, I hope you enjoy it everyone, and hold tight.
So then, you’ve obviously found this video ’cause you wanna look and find out about how these fittings work, and how MDPE pipe works. Now, MDPE pipe stands for medium-density polyethylene, which to plumbers and people like you means absolutely nothing. All you need to know is that it’s used by your water supplier to supply water up to your property. They are often found in either 20mm or 25mm sizes. It’s really, really easy to work with. These fittings are absolutely brilliant. They’re bombproof once they’re in they’re perfectly fine.
So what we’re gonna do is show you exactly how they work.
I’m just fitting a small ATPLAS chamber at my property here today. So, I’m gonna show you exactly how you can use them when you’re actually out and about on the site. Enjoy this video today guys, and remember to hold tight.
Right then, we’ve got a few different kinds of fittings here. We’ve got a 25mm to three-quarter male thread here. So that can go into any kind of iron fitting. We’ve also got a standard 20mm straight coupling. We’ve also got a 20mm to half-inch iron as well. So it gives you a good idea about how they work. Also, you’ve got a little bit of blue 20mm here. As you can see, it’s very easy to cut if you’ve got some cutters like that. And you get a really nice, clean cut on that if you use proper cutters. You can use a hacksaw on it, that’s totally fine. Now, just looking at the pipe before we continue. Often you’ll find when you’re on site or you’re working or something like that, the builders have probably put this in beforehand, and they’ve pushed it round through a breezeblock wall, or something like that, and it’s got all scored.
So what I’d say it’s a very good idea when you’re actually gonna be fitting any of these fittings to feel around the pipe itself, and just see if there’s any sort of scratches or scores in it. If there are, grab yourself a Stanley knife, and drag it.. put your Stanley blade almost at right angles to the pipe itself, and just drag that up there. And what that tends to do is just clean that off and flatten it out and smooth it out. That always helps. And obviously a great idea as well is to have a rasp for these so you can just rasp out any burrs
and flatten off the ends. Before we continue, with anything like this if you’re doing any of this sort of work, you’re fitting any of these fittings, be sure to buy the corresponding inserts to go with it. You can pop these on there like that and that lets you protect the pipe from being crushed, when you tighten up your fitting later on in the job. Let’s just have a look at a standard one of these fittings. If we unscrew the compression nut, what you’ll expose is a small clamp. Now, you’ll see… you’ll notice there’s a tape on this clamp here, and there’s a corresponding tape inside the compression nut. So when this screws down… when the compression nut screws down around on this thread, that’s gonna force down a bite on this clamp, and also a bite slightly on the rubber inside here, and make a watertight seal and make sure your pipe doesn’t pop out when it’s under pressure. We’ll just pop this bit out here. You’ll see inside there with that little white dot on it you’ve got your little rubber seal. They’re a strange sort of shape. They’re kind of… they’re not completely round. They’re kind of flattened off on each side. But that sits in there like so. Then this sits here like that. And then our nut sits on here.
The way to do it is to make sure you can see a couple of threads on here that’re completely undone. Get yourself your pipe like so. Pop your insert in it just like that. And then you’ll be able to push this right in here, and that’ll feel a little bit wibbly-wobbly… a little bit loose. Now what you wanna do is just tighten this up.

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