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<Specifically the diver was instructed to test the reg under pos pressure but not negative. The reg would pass the test even if it was missing an exhaust diaphragm. Thinking they have a perfectly functioning reg they could just end up sucking water. Is that as funny as your point?>
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If someone is so stupid as to dive a regulator without finding this before hand, then I would be the first the laugh, unless of course the stupid diver died from it. I’d be pissed at the instructor that certified the diver in the first place, especially if I was on vacation and it cut short my time. Now that instructor probably would have had a dive shop and want to sell equipment to the guy. He’d probably certify a ham sandwich if it had a few dollars to spend, what the hell he has a fat signed release anyway.
Truva