What is PEX A and PEX B?

PEX-A is the most flexible of all PEX tubing types, has little or no coil memory and gives installer an ability to repair kinks with a heat gun. First and foremost is a high rate of chemical leaching – from 50% to over 200% higher than PEX-B (2), which is a major concern for plumbing applications.Click to see full answer. In this way, can you use PEX B fittings on PEX A?Crimping will work with Pex-A fittings but expansion fitting will not work with Pex-b fitting. You might work on your wording. https://www.pexuniverse.com/types-of-pex-fittings describes it well.Secondly, why is PEX banned in California? PEX Banned From California ’01 Code. Uponor Wirsbo said its PEX pipe was introduced in California in 1990 and that the product helps solve problems in areas with aggressive soil conditions that copper pipe cannot solve. Also asked, is SharkBite PEX A or B? SharkBite non oxygen barrier pipe is manufacture as PEX-B and SharkBite oxygen barrier pipe is manufactured as PEX-C.What is the best type of PEX to use?PEX-A, which has the most flexible tubing and best freeze- and kink resistance, is ideal for use with kitchen and bath fixtures. PEX-B is slightly less flexible and less freeze-resistant. Both types of tubing come in three colors—red, white, and blue—in diameters ranging from 1/4-inch to 3 inches.

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