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PEX Fittings: Which Type Is the Most Freeze Tolerant?
It's well known that PEX pipe is better than most (all?) rigid for ability to tolerate freezing without failure; but I haven't heard much about which fittings offer the best freeze tolerance.
Is brass or plastic better? And if plastic, is there a preference between the types? Apparently, there are several different types of plastic.
The application is a vented, uninsulated crawlspace high atop a Pocono Mountain in Northeastern Pennsylvania.
I realize ideally one would eliminate the use of fittings altogether in the crawlspace, but this is a retrofit of a previously foreclosed upon property, and some hookups will be to existing copper pipes stubbing through the first floor into the crawlspace. The crawlspace main is missing. Apparently, stealing copper pipe from empty homes and scrapping it is a popular activity around the Poconos.