> A solution to ceiling rolling closed valves should be accomplished
> without creating line traps, while maintaining standard closing/ opening
> motions.
> May be just an off axis knob, like  in early US -divers/ Spirotechnique
> manifolds ( axis aiming 'bout 70° backwards)

I kind of prefer an even earlier concept, - technique.

jc


----- Original Message -----
From: Matthias Voss <mat.voss@t-*.de*>
To: Porter, Greg <Gregory.Porter@AR*.Bo*.co*>
Cc: <techdiver@aquanaut.com>; <FlTechDiver@mikey.net>
Sent: Thursday, June 21, 2001 7:49 PM
Subject: Re: Left Post Knob - Reverse Thread ?


> I definitely would reject the idea oft left-threaded posts.
> Not only for the increase in spare parts, stock costs.
> But because our muscle memory is trained from day one we use a water tap
> that turn right means close.
>
> A solution to ceiling rolling closed valves should be accomplished
> without creating line traps, while maintaining standard closing/ opening
> motions.
> May be just an off axis knob, like  in early US -divers/ Spirotechnique
> manifolds ( axis aiming 'bout 70° backwards)
> Matthias
>
> "Porter, Greg" schrieb:
> >
> > The other night in a Scott Bonis decompression class he explained why
the
> > long hose is now moved to the right post - because it fixes the problem
of
> > my OOA buddy in front being the victim of my left post being shut down
via
> > rolling the knob along the ceiling - and the fact that rolling along the
> > ceiling now shuts down the SPG instead.
> >
> > Given the machining abilities today's manufacturers possess, why do we
> > continue to deal with this potential of the left post being shut down
during
> > a roll along the ceiling ?
> >
> > > Why not build the manifold so that the left post knob is reverse
threaded
> > > ?  This eliminates the rolling off problem and it may also simplify
> > > shutting down either valve because divers would no longer have to
remember
> > > righty-tighty and how to apply it to opposing posts.  Shutting down
either
> > > cylinder would be done by rolling the top of the knob forward...
either
> > > knob.
> > >
> > Are there significant reasons preventing this change ?
> >
> > Cheers,
> > Greg
> >
> > --
> > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'.
> > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
> --
> Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'.
> Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
>

--
Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'.
Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.

Navigate by Author: [Previous] [Next] [Author Search Index]
Navigate by Subject: [Previous] [Next] [Subject Search Index]

[Send Reply] [Send Message with New Topic]

[Search Selection] [Mailing List Home] [Home]