There is now an ever increasing number of manufacturers of push fit fittings and most of the DIY outlets have their own brands of push fit pipe fittings. This fitting must be used with caution as the chrome plating needs removing from the chrome pipe before it can be used.
Push fit fittings can be used on copper or plastic pipe but not chrome plated pipe as the grip rings in the fittings are not strong enough to grip the chrome.
To join two chrome plated pieces of pipe a compression joint is recommended unless you want to remove the chrome plating from the pipe first. Although no special tools are required to join pipes with push fit some makes require the use of tools to be able to release the fittings from the pipe. Some push fit fittings are not demountable! Different makes of plastic pipe have different pipe inserts, you must ensure you use the correct ones for the pipe that you are using.
Hold the pipe next to the fitting and then mark the pipe using a felt tip pen or similar so that you know how far to insert the pipe into the fitting. Push fit joints will easily fail if the pipe is not pushed all the way into the fitting. Simple connections, done in seconds. As mentioned above, the table below lists so of the other types of fitting available and also features an image to help you identify what each one looks like. There are also fittings with screw collars which are used to clamp the pipe in place and are simply unscrewed to release.
Plastic pipe cutters — Available from our online store here. Once your pipe is cut to length, push a pipe insert in to the end that will be pushed into the fitting.
Before you do so, check both the insert and the pipe itself for any score marks that could cause leaks and also for any burrs or rough edges that could damage the O-ring in the fitting.
Make sure the insert is pushed in firmly and it fits nice and snug. If it is sloppy or can be moved easily it is not the correct one and the chances are that the joint will leak. Unscrew the locking mechanism slightly so that there is a gap between the screw cap and the collar and hold the end of the pipe so that the tip is level with the collar and then mark the pipe with a pen where it is level with the top of the screw cap. This is how far the pipe needs to be pushed in to create a suitable seal.
One thing to be aware of is that the O-rings within these fittings can be easily damaged if you simply ram the pipe in. To reduce teh risk of this happening, as you push the pipe in, twist it. This will also help to get the pipe down until it touches the pipe stop a bit easier. Ensure the twist lock cap is in its unlock position and gently push the pipe in to the fitting, using the previously mentioned twisting action and once pushed all the way in, screw the cap down until it touches the collar.
Once your fitting has been assembled, hold the fitting in one hand and pipe in the other and give it a gentle tug as it you were trying to pull it apart. If all is well there should be no movement at all but if there iis, check the fitting and ensure that the locking twist cap is tightened correctly. As we mentioned earlier in this project page, aside from the Twist and Lock fittings there are standard push-fit fittings. The pipe is simply pushed in to the fitting up to the collar and the gripping mechanism automatically locks on to the pipe and holds it in place.
Disconnecting a fitting is as easy, if not easier, than connecting up. Each of the two types has a slightly different process:. The collet can in some cases be quite tricky to push back down and in these cases, a collet release tool may come in handy. The image below shows just how simple even something as complicated as installing a stopcock can be. All project content written and produced by Mike Edwards , founder of DIY Doctor and industry expert in building technology.
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Skip to primary navigation Skip to main content Skip to primary sidebar Skip to footer Main navigation. Search this website. Blog DIY Competitions. Twitter Facebook Pin It Buffer. Project Page Menu. If you push a pipe with a rough end into one of these fitting the burrs may damage the O ring which will lead to a leak Do not use damaged or scuff pipes Do not push your fingers into any fitting as the teeth may cut you Use pipe cutters when cutting plastic pipe Making Connections With Plastic Pipe Fittings The pipe is not as rigid as copper and when the fittings are connected, especially with hot water, the ends of the pipe can become a little compressive.
Different types of fittings available A : A short length of pipe showing a pipe insert at each end. Pipe inserts must be used every time a joint is effected.
The insert gives additional strength to the end of the pipe as it is clamped between the teeth of the fittings. The image above shows how a pipe insert works titled: "Insert for pipe ends" B : An equal T piece. This can be inserted into a run of pipe allowing the water supply to be tapped into for the fitting of, for example, an outside tap C : A length of copper pipe going into an appliance tap D : Another type of appliance valve called a ball valve or stop tap.
This type of valve is most often used on washing machines where easy operation in the event of a problem is required E : These are isolating valves See isolating valves project which spedfit make in a chrome plated finish or a plastic finish F : The bottom F is a flexible coupling used for connecting two pipe ends where a tight or difficult bend is required. They are also very useful for repairing a burst pipe when the burst has been cut out. The top f is a flexible tap connector with an isolating valve fitted in line G : A stop end.
Just push onto the end of a pipe and the water is stopped.
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