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PEX PIPE | MATERIALS


Piping hot: recent advances in PEX


Recent PEX products include a home renovation project carried out by an experienced installer – while new research reveals details about chemical leaching from PEX pipe


Cross-linked polyethylene (PEX) pipe projects are usually carried out on behalf of others on a large scale – such as fitting out new office buildings or factories. However, one recent project shows that experienced fitters can also do it themselves. Minnesota, US-based Justin Johnson, who has


worked for many years as an installer of plumbing and heating systems, recently installed AquaPEX plumbing from Uponor in a renovation project in his new home. Johnson has frequently installed Uponor PEX systems for plumbing, hydronic distribution, and in-floor radiant heating applications. “After using in-floor radiant heating on a number


of projects, I had to have radiant for our new home,” he said. “The elimination of dust and dry air through in-floor heating makes for a healthier home.” The radiant system featured Uponor’s Wirsbo


HePEX tubing, which has an oxygen barrier to prevent corrosion of ferrous system components.


www.pipeandprofile.com


The installation involved loops of tubing stapled down to foam insulation on a concrete slab. In addition, the heating system incorporated multiple zones throughout the structure – including the garage. The heating design – created by Uponor Con- struction Services – segmented the floor plan into seven zones, each with its own manifold. The entire layout included 27 heating circuits. (There can be more than one PEX loop in a given zone.) The in-floor radiant installation process, involving nearly 5,500 ft of Wirsbo HePEX tubing, took two days – with Johnson and a colleague doing all the work. They arranged the tubing in typical fashion and stapled it to 2in R-10 polystyrene foam. Once in place, they air-tested the PEX and filled the system with a glycol solution. The glycol solution runs through a heat exchanger to heat a snow-melt system outside the home.


Main image: Experienced fitter Justin Johnson has installed Uponor PEX for a radiant heat system in his home


� September 2021 | PIPE & PROFILE EXTRUSION 29


IMAGE: UPONOR


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