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DIN as it relates to Tech Diving is this.... In an overhead environment (cave or wreck), you can dislodge the 1st stage on a yoke pillar valve by hitting it against something. With the screwed-in DIN valve you would have to break the pillar valve before you break the air seal. That's why is it used almost exclusively by Technical Divers. >---------- >From: Andy Barclay[SMTP:andy@le*.ca*] >Sent: Monday, May 13, 1996 11:39 AM >To: techdiver@terra.net >Subject: Re: Question (2) > >In a previous message, Wixson, Steven M wrote: >> >> Gee, does this mean that if we want to ask technical diving questions, >> that we should already know the answers? Last time I checked, DIN >> valves *weren't* used in recreational diving, so why isn't this a valid >> question? I'm sure that there was a time in YOUR past when you got >> started in technical diving that YOU didn't know the answer to this >> either. > >Sorry Mike; >I have used DIN since before I got certified.... You are out to lunch >here... DIN has nothing to do with tech diving.... >It generally has to do with working pressure.... >Sherwood Genesis tanks, and USD HP tanks have a working pressure of >3500 psi, so they come out of the factory with DIN valves... >Apparently the O Rings on yoke valves don't take the high pressure as >well >as DIN... > >> >> Maybe we should rename this mailing list to "Advanced Technical Divers >> Only Mailing List - Don't Ask Us Newbie Questions Or We Will Make Fun Of >> You!" > >Mike; >I would really prefer that this mailing list be used to ask questions >that >could not be reliably answerred on rec.scuba. I don't think that is too >much to ask. > >-- >Regards, >Andy W. Barclay. andy@le*.ca* >UNIX Instructor Team Leader / Queensview Branch Manager >(pgp publickey avail at ftp.learnix.ca:/pub/pgp.publickeys.pgp) > >Anything anybody can say about America is true. > --EMMETT GROGAN >-- >Send mail for the `techdiver' mailing list to `techdiver@terra.net'. >Send subscription/archive requests to `techdiver-request@terra.net'. >
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