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This set up is for 100% O2...I never use it deeper than 20' (ppO2 1.6). So, discussion of 30' stops is mute.<Lee> Roberto Bagnasco wrote: > >I use a standard Sherwood piston 1st stage with a yoke. To this I run a > >100' Hookah hose to a "T" > > If your first stage is good enough, you will be able to support two divers > on the same hose, but: > The flow of gas is a function of the intermediate pressure and the diameter > of the hose. Let say you put the second stage at 10msw/30feet, you are > dealing with 1bar more pressure then the surface, where you first stage > still delivers the ambient pressure plus let's say 10bars, your actual > intermediate pressure at the second stage is one bar less then it should > be. > Isn't it a good idea to tune your first stage intermediate presure one bar more? > But again if you use the same regs and you ascend to a shallower stop, > 3msw/9feet, then you will have a higher intermediate pressure. > Usually I do nothing and it still work, but I would like some comments on that. > > Merry X-Mas > > Roberto > > <<<<<<<<<<<<<<<<<<<< <<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>> > < > > < > > < "Memento audere semper" > > < > > < > > <<<<<<<<<<<<<<<<<<<< <<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>> > > -- > 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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