What Is the Large Diameter Pex Pipe?

PEX pipe is being offered in the larger sizes of 2 1/2 in. and 3 in., allowing greater use and flow in commercial plumbing and hydronic piping applications.

What are the sizes of PEX piping?

PEX tubes range in diameter from 3/8-inch to 1-inch for residential applications. For adequate water flow, it's a good idea to install 1/2-inch or 3/4-inch PEX for your main lines. The standard when replacing old water supply lines with PEX is to use the same size.

Why is PEX plumbing bad?

Potential chemical leaching is another downside of PEX piping. Due to its chemical composition, the PEX pipe material may leach toxic chemicals including bisphenol (BPA), MTBE, tertiary butyl alcohol (TBA), and others.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.