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At 10:14 AM 4/15/2001 -0700, Paul Braunbehrens wrote: Hello Paul, >will want to open it partially at first. However, on the isolator, I >can't come up with any reason why you wouldn't want a fast on/off >type valve. Since the isolator is always open, and you would close >it only in the event of a failure (at which point you would want to >shut it as quickly as possible), I don't see any drawback to a fast >valve and only advantages. The drawback is the accidental closure of the isolator, as can happen when the valve is bumped. This can cause an accident when the diver, having consumed half his gas and not noticing because the gauge on the other tank still shows plenty of gas, suddenly runs out. At best, this will cause a lot of stress if the diver figures out what happened before drowning and at worst it will (and has) cause the diver's death. Learn from the mistakes of other divers; it's safer. -Mike Rodriguez <mikey@mi*.ne*> http://www.mikey.net/scuba Pn(x) = (1/(2^n)n!)[d/dx]^n(x^2 - 1)^n -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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