Ultimate Handyman DIY Home push fit fittings

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Push fit fittings are probably the easiest of all plumbing fittings to use, no special tools are required to make the joints although special attention must be paid when cutting the pipe as the "O" ring inside of the  fittings can easily be damaged and so it is essential to use the correct cutter such as a pipe slice for copper pipe and dedicated plastic pipe cutters for plastic pipe, using an hacksaw is not a good idea as the burrs can easily damage the "O" ring and make the join fail.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. I have used John Guest speedfit® and HEP20® fittings. I prefer to use John Guest speedfit®, as I have used them plenty of times with no problems at all.


Here we have three different types of push fit fitting

john guest


John Guest Speedfit®

Cuprofit®- copper push fit


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.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. The cuprofit® for example requires a release tool and the HEP20® requires a special tool to remove the stainless steel grip ring from the pipe. John Guest Speedfit® require no tools to release the fittings.Below we are using a John Guest Speedfit® straight connector


use an insert   Cut your pipe to the required length using the designated plastic pipe cutters and then push an insert firmly into the end of the pipe.

Different makes of plastic pipe have different pipe inserts, you must ensure you use the correct ones for the pipe that you are using.

Copper pipes do not require an insert.


Mark length   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.


Push home   Now push the pipe fully into the fitting, this particular fitting has a twist lock mechanism, so be sure to tighten the fitting by hand after inserting the pipe.


When the pipe is fully inserted and it has been locked in place, pull on the fitting and the pipe to ensure it is located correctly. Once the stainless steel grip ring inside the fitting has gripped the pipe it is impossible to pull the pipe out without undoing the twist lock mechanism and pushing the plastic collar towards the fitting.


twist to lock   To remove the pipe from the fitting undo the twist lock by turning it, then push the collar in towards the fitting whilst pulling the pipe away from the fitting, this will release the pipe.

Some people do not trus push fit fitting and so probably the next easiest join to make is by using compression fittings





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