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Date: Tue, 19 Mar 1996 08:06:18 -1000 (HST)
From: Richard Pyle <deepreef@bi*.bi*.Ha*.Or*>
To: Barrie Kovish <bmk@ds*.bc*.ca*>
Cc: rfarb@na*.ne*, techdiver@terra.net
Subject: RE: C2 death


Thanks for the report, Barrie.  I remember seeing something about it on a 
televison special about Orcas a while back.

> By the way I expect that most fully closed circuit MIXED GAS rebreathers 
> (including the ccr-1000 line ) also have a cmfv which I would expect to 
> be subject to the same kind of failure.  Hopefully regular maintenance 
> and electronic warning devices would prevent a similar tragedy.  I assume
> that everyone realizes that semiclosed circuit constant mass flow
> units have cmfv's.

To my knowledge, no fully closed rebreathers use cmfv's.  All the ones I 
know about use electric solenoid valves with manual bypass system. 
Fortunately, there is a strong audible clue when a solenoid valve fails; 
I'm not sure the same is true of cmfv's.

Aloha,
Rich

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