If brass is a no-no on fittings, why is the threaded connector on high pressure gauges made of brass? That includes the gauges sold by AoA, Airtanksplus, Pyramyd Air, and others. IMHO, it's not brass that is the culprit, it's the lack of quality control and testing from certain manufacturers that is the cause of parts failures. The DIN300 connectors on most of our SCBA tanks and the valves on most tanks are made of brass with a nickel coating.
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