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Hi Carlos, I did a little ambient research several years ago. As I recall, a gate valve fouls rather easily and is slow to operate. A ball valve may dump your cabin air much too quickly if heavy handed. I cannot recall, what IVC uses on the Sportsub (automatic pressure regulated poppet perhaps) but, whatever it is, I suspect that is what you should consider the best candidate. Good luck Joe > Date: Thu, 21 Aug 2008 10:06:06 -0400 > From: carlosd072657@gmail.com > To: personal_submersibles@psubs.org > Subject: [PSUBS-MAILIST] Venting an ambient sub > > Hi all,I know most of you are into 1 atm subs,but I need a little help with my > "want to be sub". It will be similar to ivcorp's solo sub, I calculated my > minute volume @ 18 liters/min,(700cc tidal volume X 20 breaths/min).That's > how much I will be bleeding into the sub.To vent that amount can I use > a simple gate valve to do it? > I figure I can start the flow, then adjust the gate valve until the > level of water in > the sub remains constant.This will ensure that I have a constant exchange of > air. I will have a separate ballast tank forward to control buoyancy. > Trying to build a water/air tight batt. box is another issue. > I would greatly appreciate any advice you guys can give,Thanks > Carlos > > > > ************************************************************************ > ************************************************************************ > ************************************************************************ > The personal submersibles mailing list complies with the US Federal > CAN-SPAM Act of 2003. Your email address appears in our database > because either you, or someone you know, requested you receive messages > from our organization. > > If you want to be removed from this mailing list simply click on the > link below or send a blank email message to: > removeme-personal_submersibles@psubs.org > > Removal of your email address from this mailing list occurs by an > automated process and should be complete within five minutes of > our server receiving your request. > > PSUBS.ORG > PO Box 53 > Weare, NH 03281 > 603-529-1100 > ************************************************************************ > ************************************************************************ > ************************************************************************ > |