Pex Fittings

Pex Fittings

As you could imagine, there are as multiple fittings depending upon:

1. The type of pex crimping system being used.
2. The use of the type of fitting in the plumbing job.
3. The need to transition from pex to copper, galvanized, or other type of plumbing system.

Great Pex Fittings!

As we have learned in the previous pages, once you decide on a particular crimping method, be that the standard, expansion, or cinching method, that will drive what types of fittings can be used with that system.

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The standard crimping method typically uses non proprietary fittings. Usually they are made of brass but there are others made of bronze, plastic and copper. On one side, there is the side which is inserted into the pex and crimped. The other side will either have another side to be crimped or is a transition side to copper or other plumbing materials. These are known as couplings.

Fittings with the cinching method will be similar to the standard method. The use of non
proprietary fittings are typcially used. The fittings can couple pex to pex, pex to copper,
pex to cpvc or pex to galvanized pipe.

pex-fittingsThe expansion method of crimping known as the wirsbo/uponor method has it’s own set of
proprietary fittings known as Propex. These fittings are actually the size of the ID
(internal diameter) of the pipe. The reason is that once the pipe is expanded the
fitting is inserted and the memory of the pipe closes down on the fitting and thus gives a
very tight fit. Again, only pex-a type of tubing can be used with this method. The fittings
can be made of brass or engineered plastic.

Watts Brass & Tubular Pex Fittings


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