As i said, 3 surveyors, no mention. If it was an ABYC issue it would have been on the surveys.
I ve had 3 surveyors on boats with schedule 80. It passed.
An air con pump will not put anywhere near the pressure of a 60 PSI Mach 5 or shore side power so I can’t imagine schedule 80 blowing out because...
Lousy setup. Single clamps and not even the good solid band clamps…. most of the plumbing on both the 84 Lazzara and now the 110 is schedule...