What is PEX?

PEX, an acronym for crosslinked polyethylene, is a flexible, durable tubing product that has been proven for more than 40 years in homes and businesses worldwide. It resists corrosion, pitting, scaling and, due to its incredible flexibility and expansion properties, can even help resist damage from freezing. Currently, there are three methods to manufacture PEX PEX-a (Engel method), PEX-b (Silane method) and PEX-c (E-beam or radiation method).

The PEX-a Engel-method manufacturing process produces PEX with the highest degree of crosslinking for a product that is the most flexible, least likely to kink and offers thermal and shape memory characteristics that maximize the best fitting option for PEX expansion fittings with PEX-a rings, also called Pro.

Why Repipe with PEX-a?

All American Repipe & Plumbing proudly installs Uponor Aqua PEX-a tubing and Pro fittings for all its repipe jobs. With over 15 billion feet of PEX-a tubing in service worldwide, Uponor PEX-a is the product of choice for repipes in large-market areas all across North America.

Uponor AquaPEX tubing and ProPEX fittings are NSF International-certified for water purity and meet local, state and national lead-free legislation requirements. In fact, Uponor even backs its AquaPEX tubing and ProPEX fittings with a 25-year limited warranty when installed by an Uponor-trained professional.

(To learn more, visit www.uponor-usa.com.)

Benefits of Uponor PEX-a Plumbing Systems

1. Resists corrosion, pitting and scaling
2. Less susceptible to freeze damage compared to copper and CPVC
3. Eliminates water hammer and singing pipes
4. Retains more heat in hot-water lines and resists condensation on cold-water lines
5. Most flexible with the smallest bend radius of all PEX, reducing the number of necessary fittings
6. Unique ProPEX expansion fittings create strong, durable connections without the need for torches, glues, solvents or other dangerous chemicals
7. ProPEX connections cannot be dry fit; eliminating concerns about damage from blow-offs