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Date: Sun, 14 Apr 1996 12:03:05 -0400
From: Dave Mabry <dmabry@mi*.co*>
Organization: Great Lakes Maritime Institute
To: George Irvine <gmiiii@in*.co*>
CC: Techdiver List <techdiver@terra.net>, cavers list <cavers@ge*.co*>
Subject: Re: Genisis garbage - another reason
George Irvine wrote:
> 
> 
> 
>        I forgot the most important reason why genisis tanks are garbage when
> doubled: you must use the worst manifold ever made outside of the "cheater
> valve" - the Sherwood D.I.N. This piece of shit is not counter-threaded like
the
> Dive Rite and Scuba Pro, so when one side tightens, the other loosens at the
> center. It has a face ring and a lip seal - true genius . The face seal is
> loosened on one side or the other when the center post moves, blowing the
o-ring
> seal, and the lip seal fails whenever it wants to. The Dive Rite, by way of
> contrast, has double barrel o-rings that allow the center piece to move
without
> effecting the integrity of the seal.
> 
>        To further demonstrate the sheer stupidity of whoever designed this
> thing, the D.I.N. posts are cocked upwards so that you can be sure to knock
your
> regulators off (break the DIN tube) if you hit something, or if the tanks fall
> over with the regulators on. This piece of remarkable forethought and
> engineering also allows the tip of the DIN post to collapse if the valve comes
> into contact with anything, like the side of your truck bed, denting the
shitty
> brass they use and making it impossible to screw in the DIN connections. You
can
> not re-tap it, as the brass is like butter in the first place.
> 
>        You get all of this for about twice the price of a Dive Rite manifold.
As
> I said, only a complete and utter stroke would have something like this, and
> then only an obvious nephyte (and moron) would then come on here and argue why
> this is the right thing to have , and that I don't know what I am talking
about.
> Good luck.
> 
>         - George

This is good info, George.  I was just looking at manifolds and almost bought 
the Sherwood.  Unfortunately I didn't know this, but fortunately I hesitated 
and then ordered the Dive Rite instead.  Why don't the dive shop owners know 
this shit and tell us poor unsuspecting customers?  (rhetorical question, no 
need to answer it)

But I did notice that the DR manifold comes in 5/8" threads.  Doesn't that 
mean that you "could" use it on the Genessis 120s if you really wanted?  
Treat this as rhetorical, too.  I also ordered PST 104s from Crazy Lloyd's.

One question that isn't rhetorical...Dive Rite manifolds appear to only come 
as 200 bar if ordered with 3/4" threads.  Is that correct?  If so, then is 
that appropriate for the 104s?  The overfilling pushes them over 200 bar.  
Not a problem?  Or what?

Thanks.
-- 
<<<<<<======------======>>>>>>
Dave Mabry    dmabry@mi*.co*
<<<<<<======------======>>>>>>


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