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Date: Mon, 12 May 1997 17:45:54 -0400 (EDT)
From: Egil Aabel Naesguthe <egil@me*.qu*.ca*>
To: cavers@ge*.co*, techdiver@aquanaut.com
Subject: Dive Rite vs Scuba Pro valves
Every one agrees that the Dive Rite, Scuba Pro and Sea Elite (I have not
seen these myself) valves are equivalent, but why do only the Scuba Pro
valves have the thin tube sticking down inside the tank below the threads? 
What is it supposed to do?  The only explanation I have heard some time
ago was that this would guard against sucking in any accumulated CO2, and
possibly against any loose debris inside the tank, but I don't know about
that. It can't be that critical if Dive Rite omits these tubes. 

Egil.

====================================================================
                    Egil Aabel Naesguthe

 Queen's University                      E-mail: egil@me*.qu*.ca*
 Dept. of Mechanical Engineering
 Kingston, ON                            Phone:  +1 613-545 6730
 K7L 3N6
 Canada                                  Fax:    +1 613-545 6489
====================================================================

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