Its market share is increasing. So why aren't more contractors using PEX for potable water systems?
PEX for potable water systems is currently marketed by several manufacturers, including IPEX, Wirsbo, Watts Radiant, REHAU, Zurn, Stadler Viega, RTI, Weil-McLain and Vanguard.
Cross-linked polyethylene (PEX) is nothing new under the sun. It was developed in the late 1960s by inventors like Thomas Engel and Dow Corning, and marketed to Europe as the next best thing to happen to plumbing and heating since copper.