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Joints are the fittings used to join lengths of pipework at any given point. They vary in shape, size, material they are constructed with and how they are sealed. Here in this section we will cover some of the different types.



These work by compressing an olive around the pipe to form a seal. They are easy to use even when pipework still hsa water in it but are slightly larger than the other types of joints.



Push-fit joints act by gripping the pipe with its "teeth" once pushed into the fitted. While an inner "o" ring provides the seal. These can be used on plastic or copper. They are also slightly big and unsightly and require a special tool to remove but you can remake the joint as many times as you like.



Soldered fittings work by heating the solder to liquid point then this metal liquid it drawn into the fitting by capillary attraction. Once it has cooled down the metal returns to its solid state and seals the joint. Both the fitting and the pipe have to be thoroughly cleaned and flux applied, this stops the joint from oxidising. Great care has to be taken when soldering as the blow lamp can burn surroundings and the use of too much flux can cause problems in your system. And if the solder doesn't run around the fitting properly it will leak - you also cannot solder if there is water in the pipe.

Solvent glue


Solvent glue is only used on plastics like on waste pipes and overflows. The solvent glue is applied to the joint and sets to form a seal.

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