Hello! Probably an odd question, but I'm coming into the middle of a project someone else started that I have to finish....We bought a new place recently and I'm finishing a boiler installation that the previous owner (or somebody, long story) started. Its a wood fired boiler, located in the garage and piped into the house. They had the pipe already laid and buried in the ground, I need to attach it to copper on both ends and a few other things. BUT... I thought it was PEX pipe (admittedly I'm not very familiar with PEX, still old-school with copper myself) It appears not to be. There are no markings on it whatsoever, which is perplexing to say the least. Measures 1" ID, and a 1" pex clamp-collar type fitting swims inside it. A brass barbed fitting like you'd use for Poly fits ok in one line, but loose enough to cause trouble in the other. A pair of standard screw-type hose clamps wont even begin to compress it. Any ideas what this pipe is and what type of fittings I need to connect to copper? I should add that 1 1/4" barbed fitting is way too big...
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