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Date: Tue, 18 Aug 1998 08:32:59 -0700 (PDT)
To: "Jess Armantrout" <armantrout@wo*.at*.ne*>
From: Kevin <Kevin@So*.co*>
Subject: Re: To Din or not to Din
Cc: <techdiver@aquanaut.com>
>maintain gear properly and yokes are fine for stage bottles.

I do. And am a repair technician for both the VALVE and the FIRST STAGE. It
still blew. It was an almost brand new viton o-ring with less than one hour
on it and was inspected prior to use.

Bottom line is it blew. ( In front of me and into three pieces, extruded
right out of the seat )

Although no expert, from the failure analysis reports I have been able to
find, yoke o-ring are far less reliable than the captured DIN o-rings. (
Manufacturer's test reports and old areticles from AquaCorp etc. ) From
personal experience, have seen many yoke o-rings blow, never seen a DIN
o-ring blow. ( More than a few years of teaching every weekend and casual
observations at the beaches, docks and diveboats. )

I realize that yokes are cheaper and more plentiful, especially in the
states, but if they are LESS reliable, and this is LIFE support equipment,
then I stand by my humble opinion . . . . . .

Yoke valves ? Just say no.

Educate me if I am wrong. I have a fire extinguisher by my desk for the
expected flames . . . 

Kevin


" You'll never miss the water,
until the well runs dry . . .. "

as sung by Bob Marley 

                             [\]
                            |
                            |
^^^^^^^^^^^^^^^^^^^^^^
                                                    o           o  
                                              o           o
                                         o         o
 _____              o         o  
(_/\_)        o   o  o   
 =( )=   oo

Kevin Rottner

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