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>Dear Mr. Appleyard (1) The A.P. Valves bcd seems to rinse easily between the cloth outer material and the inner vinyl bag. I have used these bcds for years and have accessed the inner bladder directly, it was always clean. (2) I envisage the cannister being mounted in the existing tank strap. The hose routing would be; cleansed gas exiting top of canister running to right port of a full face mask, exhaust gas would exit mask via left port to enter bcd at orifice originally intended to mount the low pressure inflator hose assembly. The exhaust gas would exit the bag at what was the original site of the over pressure dump on the lower left rear of the bcd, the co2 rich gas would then be routed to the bottom of the scrubber stack. As o2 was metabolized it would be made up as required from the already plumbed bail out bottle. I have not considered using a larger inflation cylinder yet. For my planned application if the bottle was filled to 2400psi I expect the gas to last 2 to 3 hours (depending on degree of activity and amount of system puging) If you have access to a decompression program that allows surface O2 you will quickly see that prebreathing times on the order of 20 to 40 minutes yield the greatest benefit with reducing decos for most dive profiles. Used free swimming with moderate exertion the unit would give some what less that 1 hour which would be appropriate from the perspective of cns toxicity. If on the other hand you wished accomplish an in water o2 recompression and needed extra gas duration, A.P. makes a low pressure inflator feed that is intended to go inline on their corrugated breathing hose. Plumbing this in would be an easy and unobtrusive way of accessing gas supplies other than the built in bail out bottle. Best of the Season! Bill > (1) How accessible is (the space between the inner bladder and the outer >bladder) to flooding from the outside, to wash salt out when I am washing it? > (2) What place have you in mind to put the canister and to run the hoses? >One way might be to fasten the canister across the front and run the existing >mouthpiece tube into it; and a new single breathing tube from the top of the >canister to a fullface mask. Perhaps enlarge the inflation cylinder pocket for >a bigger oxygen cylinder. >-- >Send mail for the `techdiver' mailing list to `techdiver@terra.net'. >Send subscription/archive requests to `techdiver-request@terra.net'. >
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