How Many Types of PEX Pipe?

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There are three common types of PEX pipe: PEX-A, PEX-B and PEX-C. There is a widespread misperception that the letters refer to grades of quality and that PEX-A is better than PEX-B which is superior to PEX-C.

Different Types of PEX Pipe | How to Make PEX Connections