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US DOT SCBA's and industrial cylinders are well over 300bar. Nothing in scubaI always thought the recall the "real" high pressure steels are 300 bars. By my math that's ~ 4,500 PSI...
(and most DIN regulators sport that proud 300 bar rating).
But I concede that most shops can't get there with their compressors, struggling often with 3,400..
On that note - has anyone ever seen a DOT rated 300 bar Faber perhaps?