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From: "Shimell, David (shimell)" <shimell@se*.co*>
To: tgunther@co*.co*, techdiver@aquanaut.com
Subject: RE: Hello and my 2 cents
Date: Fri, 19 Nov 1999 09:20:27 -0800
Tod

I've just checked by gear.  Just to confirm, the break away O-rings (Nitrile)
currently on it are:

022	Regulator (Internal Diameter 1", Section 1/16)
120		HP Hose (Internal Diameter 1", Section 3/32)

The HP hose breakaway may in fact me a metric equivalent.  You'll find that
you can use any size approximating these sizes, e.g. a 126 looks like it
would be fine as well for the HP hose.

Recall that the regulator breakaway needs to be an easy break - they are
quick to replace - your second stages should only be hand tight to the
fitting, so you can unscrew them to fit the clip.

The regulator breakaway gets more abuse and should be stronger - just check
that you can break it OK with a strong pull.

David Shimell
Email: shimell@se*.co* <mailto:shimell@se*.co*> 
Project Manager, IBM NUMA-Q, Sequent Computer Systems Limited,
Weybridge Business Park, Addlestone Road, Weybridge, Surrey, KT15 2UF, UK
registered in England and Wales under company number: 1999363, registered
office as above

-----Original Message-----
From:	Shimell, David (shimell) 
Sent:	Friday, November 19, 1999 7:43 AM
To:	'tgunther@co*.co*'; techdiver@aquanaut.com
Subject:	RE: Hello and my 2 cents

Tod

BTW, I now use two sizes of breakaway O-ring: 1/16 section for the regulators
and the next size up, 3/32 section, for the HP hose clip.  The regs really
need to break easily, the HP hose gets more rough treatment in normal use and
I found that they were breaking too often in normal use.

I'll look up the references when I get back home - I'm in bonnie Scotland at
the moment.

David Shimell
Email: shimell@se*.co* <mailto:shimell@se*.co*> 
Project Manager, IBM NUMA-Q, Sequent Computer Systems Limited,
Weybridge Business Park, Addlestone Road, Weybridge, Surrey, KT15 2UF, UK
registered in England and Wales under company number: 1999363, registered
office as above

-----Original Message-----
From:	tgunther@co*.co* [SMTP:tgunther@co*.co*]
Sent:	Friday, November 19, 1999 12:31 AM
To:	techdiver@aquanaut.com
Cc:	Shimell, David (shimell)
Subject:	RE: Hello and my 2 cents

<<   I found a neck O-ring to be too strong and bought some thinner
O-rings
of
1/16" section but the same diameter (sorry, I can't recall the reference for
these)  >>

Does anyone else happen to have a reference for these 1/16" o-rings?

Tod


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