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Folks, What I consider to be an extraordinary experience happened to a close colleague last Sunday. The specifics: Open ocean, twin independent tanks, Poseidon Jetstream 1st and 2nd stages, 50m (164ft) dive, no penetration, weather excellent, viz 20+m top to bottom, sea calm, no wind, water temp about 19C (no idea what this is in F, warmish though), sunny blue skies in (winter) Oz around Sydney (gotta get a plug in somewhere). On deco Roger hears a BANG, hissssss, takes another suck of the 2nd stage to get zero air. Fine, drops reg, changes to the other and continues, no problem. In the meantime Craig who is three metres below him notices this 2nd stage, complete with hose, floating towards him and snaffles it. Craig then turns off the offending 1st stage. Back on board it is discovered that the hose of this Jetstream has cleanly, no splits, no furriness, no apparent wear, come away from the metal bits designed to clasp it to the 1st stage. This is even more extraordinary when one remembers that Jetstreams use an overpressure relief valve immediately before the 2nd stage. The Offending 1st stage works well with the 2nd stage of the other reg set. Both sets of regs have received regular and excellent service. I have _never_ heard of this (precisely this) happening before with a low pressure hose, ANY low pressure hose. Sure, hoses can "break" but this was not a break. As well, because of that overpressure relief valve, why should this happen to a Poseidon in particular? Comments? Speculation? Christian -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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