How to Join PEX Pipe to Other Pipes

PEX is a flexible plastic pressure pipe that is used in plumbing and hydronic heating systems, cooling systems, and for snow and ice melting. It has great flexibility and is designed with rigorous testing for durability and material performance. It is an excellent alternative to copper and CPVC rigid piping. It is easy to install, has low pressure loss and is safe for potable water applications. It is also easy to connect to existing metal supply lines with the correct fittings. It is also available in different colours to easily identify hot and cold water supply lines, making it a great choice for radiant floor heating.

Aluminum PEX tubing (also known as RadiantPEX-AL) has a layer of aluminum sandwiched between two layers of oxygen barrier PEX. This increases its strength and sturdiness, while it also allows it to bend much like regular PEX tubing. It is also quieter than regular PEX, because it does not expand as far, resulting in less noise for underfloor radiant heating applications.

There are a few ways that contractors use to join PEX-AL to other pipes, including push-fit connections and crimp or compression fittings. The push-fit method uses special fittings that grab the end of the pipe just like a paper tube trap. They are a fast way to connect PEX, but require a special removal ring to remove them once the connection is made. Crimp or compression fittings, however, are a much more secure way to join PEX-AL and require specialized tools.pex al pex pipe