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and just to be clear, the discussion with Mr. Mee concerned ocean and not cave, you cave guys are all nuts. rgds, Al Marvelli RDecker388@ao*.co* wrote: > In a message dated 6/24/00 4:46:00 AM Eastern Daylight Time, > ajmarve@ba*.ne* writes: > > > I dont see the point of an h valve, i either dive doubles or i dive > singles, > > if > > i cant use the single i use the doubles. I had a y valve but it never > really > > worked like i wanted it to. > > Al, > > H-valves provide a bit of redundancy for folks doing non-technical > penetrations into wrecks, caverns, etc. (A much better option for these > divers than carrying a pony bottle which results in more drag and are seldom > used properly anyway). They also serve as a nice transitional tool for divers > with an interest in pursuing a more serious level of diving but not quite > ready to make the move based on experience levels. Then there's also the > consideration that use of an H-valve allows one to use the same regulator > systems, and a similar configuration, whether diving a single or double tanks. > > As I understand it one of the key points of DIR, and an attitude embraced > by many non-DIR divers as well, is that one takes only what they need to > accomplish a particular dive into the water. For a little 120/130 fsw dive > for 40 minutes or so, resulting in a short deco obligation, a single tank > loaded with a light trimix and a small sling bottle of 50/50 would be all > that was really needed. It should be obvious that an H-valve, combined with > a good dive partner, would provide the level of redundancy required for such > a dive. > > Finally, I seem to recall either Trey, JJ or both suggesting the use of > an H-valve as the DIR approach to single tank diving. I could be wrong but > I'm realitively confident that is the case. > > Bob Decker > SportDiverHQ.com > -- > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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