In the case of an ambient submarine...would the use of a portable tire inflation air pump be able to bring air from the outside (while surfaced of course) to within the contained bubble of the submarine without hurting the operators eardrums? If this could be done, this could save on the precious compressed air supply. Any "extra" air would simply burped out and discarded. David Bartsch From: ShellyDalg@aol.com Date: Sat, 27 Jun 2009 13:25:37 -0400 Subject: Re: [PSUBS-MAILIST] Over Pressure Valve Options To: personal_submersibles@psubs.org Hi Dean. I wouldn't call me one of the "experienced guys" as I'm as new as you are, but ya, I think a little 12 volt tire inflator would have several uses on a psub. Frank D.
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