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Date: Sun, 09 Feb 1997 20:59:12 -0500
From: Dave Mabry <dmabry@mi*.co*>
Organization: Great Lakes Maritime Institute
To: cavers list <cavers@ge*.co*>, Techdiver List <techdiver@aquanaut.com>
CC: George Irvine III <gmiiii@in*.co*>
Subject: DIN adapter for filling
I have a question or two about using the OMS argon first stage regulator
and filling an argon tank.  First, the OMS regulator for argon has a 200
bar din fitting and therefore won't work with a 300 bar valve.  So I
plan to get a 200 bar valve for my argon tank.  No problem so far.

I can now fill argon to yoke valves (have the necessary hose/adapter)
but will need to fill din after putting a 200 bar din on my argon tank.

The adapter I bought for filling din valved tanks from a yoke whip is a
300 bar one.  This is a block of brass that screws into a din valve and
has a yoke fitting on the other end.  You probably have seen one.  It
has this tube that sticks out of the din end about a quarter of an
inch.  This prevents it from sealing in a 200 bar din valve (the hole at
the back of the din valve is too shallow for this tube).  A 300 bar din
valve has a deeper hole.

Finally, the question.  I don't see the problem with filing off the tube
that sticks out of the adapter so that it won't interfere in a 200 bar
valve.  Does anyone know if there is any problem with doing this?
-- 
Dave Mabry     dmabry@mi*.co*
Great Lakes Maritime Institute Underwater Research Team
NACD           NSS-CDS #42872
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