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To: techdiver@opal.com
Subject: SPG FOR O2
From: "Andrew Cohen" <Andrew_Cohen@cc*.ss*.nm*.go*>
Date: Wed, 08 Mar 95 13:44:41 EST

     Over the last few months we've really beat the topic of O2 
     compatibility and O2 cleaning of regulators to death.  I don't recall, 
     however, any suggestions on how to prepare a submersible pressure 
     gauge for O2 service.

     Obviously, the O rings would have to be changed.  What does one do 
     about the inner workings of the gauge, and the HP whip itself?

     On a related topic, I'd be interested in learning how people are 
     preparing the inside of their O2 scuba tanks.  Most of my steel tanks 
     have been tumbled at some point.  The standard procedure for cleaning 
     the dust out of a tumbled tank (used for air) is to blow the dust out 
     with HP air.  A residue remains, and the tank's interior is still 
     coated with a layer of fine, sticky matter.  This presents no problem 
     whatsoever with compressed air, but I'd be worried about putting 
     1800-2000PSI of oxygen in there.

     Any thoughts?
     Andy Cohen

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