Re: Damn... I may be turning into a DIR Nazi ;-)

-hh wrote:

Don <aussie.impo...@xxxxxxxxx> wrote:
Lee Bell wrote:
-hh wrote

FWIW, for anyone who thinks that lefthand
threads are impossible to overcome in training,
take a look at the plumbing at virtually any
bathroom sink...

Excellent point.

But is it something that you need to react correctly
to in an emergency, when you're possibly narced?
Just asking the (to me) obvious question.

It is a fair question, and to a degree you also provide the answer:

... Although
I suppose that if both valves on a manifold turned off
towards the body, it wouldn't take that long to re-learn.

That's the classical 'muscle memory' advocacy.

Interesting consideration -- but I'd really want to keep
"helpful" divemasters away from my kit in that case.

More the reason to see if its reasonable to consider using a ball
valve instead: its either straight in line (open), or 90 degrees
perpendicular (closed).

I can see an obvious problem with this-- opening high
pressure gas that quickly is dangerous. Particularly
so with O2 or O2 rich mixes. Also, it would hammer the
s***t out of the high pressure seats in the regs.


In general, the only problem is that no one has taken a $57 MSRP
high pressure gas service ball valve (such as this one):

<http://www.dakotaspray.com/index.php?

main_page=product_info&cPath=81&products_id=347&zenid=10bccaf865655a61638819d9c362e118>

...and integrated its essentials into a standard scuba tank thread
valve assembly to even consider it for use.

There is this problem as well. But the seats and adiabatic heating
are much more of a concern for me.

-Don
.

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