It seems to be common thinking where I work that you cannot in any circumstances swage K65 copper for an R744 system, you must use coupler fittings.
I guess the fact they sell fittings would indicate that they should be used, but then again it could be a money making ploy.
Is there anywhere or anyone that says explicitly that you couldn't swage a piece of K65 copper and use it on an R744 rack for example?
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