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From: <Wahoodiver@ao*.co*>
Date: Fri, 22 Jan 1999 17:10:47 EST
To: ingemar.lundgren@mb*.sw*.se*, cobber@ci*.co*
Cc: Grey@is*.ca*, artg@ec*.ne*, Scaleworks@ao*.co*, Rubrifolia@ao*.co*,
Wahoojan@ao*.co*, techdiver@aquanaut.com
Subject: Re: usefull pony bottles ( was which course& school)

In a message dated 1/19/1999 17:33:06 Eastern Standard Time,
ingemar.lundgren@mb*.sw*.se* writes:

> Only kidding.  The burst disk is a little disk of copper in your valves
>  > which is theoretically supposed to give way in the event of
>  > overpressuring your tank via overfill or heat.
I believe the material used is beryllium, not copper, the disc are also
attached by the salt water environment. (Fresh water cavers and great Lakes
divers don't have this problem) Double disking is used my many people, but a
better suggestion would be to have your burst disc changed with your yearly
VIP.
captain steve bielenda
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