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https://apollovalves.com/article/pex-a-b-or-c-understanding-the-differences

Had a plumber come out to my sisters house cause it was just to much for me to fuck with. He replaced with this and said it could expand to twice its size in a freeze. Thinking of having the whole house re plumbed with it ( small house).

Npw at work we have one line with pex ( not sure what type) but I have had to fix two leaks when not freezing. Of course it could have been fuckin moles chewing on them.

https://apollovalves.com/article/pex-a-b-or-c-understanding-the-differences Had a plumber come out to my sisters house cause it was just to much for me to fuck with. He replaced with this and said it could expand to twice its size in a freeze. Thinking of having the whole house re plumbed with it ( small house). Npw at work we have one line with pex ( not sure what type) but I have had to fix two leaks when not freezing. Of course it could have been fuckin moles chewing on them.

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[–] • 1 pt

Pex A is great stuff. Basically nonreactive and will last forever. At least with uponor style expansion fittings, in plastic. The brass expansion fittings won't last as long. However there are many types of pex fittings, I'd be wary of crimp style pex as it greatly reduces the inside diameter.

Viega has also come a long way with pex B with their pureflow lineup. Also reduces the inside diameter and I would not trust it as much as uponor as it is far too new.

At any rate it may be more resistant to freezing but that is no reason to install it. It is a mechanical problem and repeated stress will eventually wear anything down. At best it will cover you for a moment of carelessness but is no substitute for proper precaution.