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it worked, but the solder did not want flow as well I'm used to.. I still might do another loctite crank..(getting good at making webs)
have to check the pack on monday, most likely stay-silver 15,, was gifted several packs a while back,, always flowed well for me,, many of the chambers I keep running had water cooled heat exchangers,, the old units were failing, to fit a replacement required a steel to copper joint and about ten more copper to copper..