Come visit our vast inventory of multilayer pipes. Whether they are bare, coated, or even insulated, our multilayer pipes will meet all your needs. Browse our catalog of products from top brands (such as SOMATHERM, COMAP) and find the multilayer pipe that suits you! For more information, check out our complete presentation at the bottom of the page!
An alternative that combines the strengths of copper and PEX, the multilayer pipe quickly gained popularity in Europe. Our pragmatic German neighbors even made it their number one distribution system, ahead of copper. It ranks second in Spain, ahead of PEX. In total, more than 300 million meters have been sold in Europe.
Its advantages are numerous, see for yourself:
It is economical, both in the short term (it costs less than copper) and in the long term (its lifespan reaches 50 years and is often guaranteed for 10 years). It is ultra resistant: both to heat and to the most extreme pressures. It also has good resistance to external elements and generally does not need protection. Unlike traditional PEX, it is UV resistant and can be installed both concealed and exposed. It is also very malleable: bending this pipe can be quickly done with an internal and external spring and can also be done by hand. Its semi-rigid material allows it to maintain its shape for life once bending is complete. Practically, it is 7 times more flexible than a copper pipe, while maintaining an expansion nearly equal to that of copper.
But why so much enthusiasm for this relatively new product?
The multilayer pipe is actually an improved version of cross-linked polyethylene (PEX). Synthetic, it is composed of multiple layers: two layers of PEX interspersed with an aluminum layer.
Multilayer pipes are sometimes referred to as: PexcAluPexc or PexaAluPexb. The letters a, b, and c only describe the cross-linking process used in PEX manufacturing. For instance, "a" implies the PEX has been cross-linked using the Engel method, which allows the use of full-bore fittings.
Multilayer pipes are very versatile, and their applications are as well. They can generally connect devices across 3 application classes.
Class 2 represents the former ECFS class. Pipes in this classification can supply hot and cold water to sanitary fittings.
Class 4 represents the former class 2. Multilayer pipes in this category can connect low-temperature radiators and various underfloor heating equipment.
Finally, the current class 5, formerly class 0, indicates multilayer piping for high-temperature radiators.
However, you will find a wide choice of multilayer pipes in our catalog belonging to these 3 different classes. This is where its great versatility lies.
Have you found an old multilayer pipe at the back of your garage and want to know if you can use it?
Take a close look at the pipe, you will find the most important information: the manufacturer, the diameter, the technical opinion number, but also the manufacturing date (knowing that the multilayer pipe often comes with a 10-year warranty and has a lifespan of over 50 years). The application classes are also present on the marking, along with the CSTB logo.
How to connect multilayer pipes?
Like other synthetic pipes (PB, PEX...), specific tools are needed to fix the fittings. Most manufacturers create their own systems, which does not necessarily improve inter-product compatibility. Manufacturers have understood this well, which is why there are now family classes indicating which products are compatible with each other. Family A is an open system. Products from this family can be associated with pipes and fittings from different brands. Family B is a closed system. Its pipes can only be connected with fittings of the same brand. The last family, Family C, is a free system.
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