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Ranjit Chagar wrote:
> Morning all,
>
> To take this subject off to one side for a moment, can anyone tell me
> the best way to rig argon to a drysuit. My main question is where does
> the argon cylinder go? Also, would you have a pressure gauge on the
> cylinder?
I have mine strapped to the doubles with a custom made retainer. But
you can buy pony fixation kits that work fine, too (eg. from Halcyon
or Poseidon). The cheapest option is to use straps with weight
retainers.
Top Front
=O---+---O=
/...\ /...\ +--|--+ +--|--+
/ \=/ \ | | | |
| O ||| O | Tank->|#####|^|#####||-|
\ /|\ //-\ Bands | | |=====||=| <- Straps
\.../ ^ \.../ \-/ | | |=====||=|
------/ \------ |#####|^|#####|+++
\_____/ \_____/ O <- Keep the valve knobe
somewhat above the flor
Weight retainer Weight retainer
/xxxxxxxxx\ |
|x| |x| |x| ===== v
|x| |x| |x| // \\ ===
|x| |x| |x| || =A= =
|x| |x| |x| || =B= =
|x| |x| |x| \\ // ===
|x| |x| |x| ===== <- Strap
|x| |x| |x|
\xxxxxxxxx/
A B
Another point about argon usage is to consider what happens
when a piece of equipment fails, how to avoid failure and
how to make the impact less seviere. Here are just some
thoughts to that complex:
a) inflator fails => auto-inflation
Prevent: operate your 1st at a lower intermediate pressure
This relievs the inflator and the hose. Besides it
makes it easier to disconnect the hose from the
inflator. ~100psi is fine.
Use an overpressure relieve valve to avoid damaging
of the the lp hose and drysuit inflator in case of
1st. failure. (Opening pressure ~200psi)
Action: shut off argon (manually turn on when inflating)
b) 1st fails => intermediate pressure rises
Action: shut off argon (manually turn on when inflating)
c) hose breaks/leaks => argon leaks
Action: shut off argon (manually turn on when inflating)
d) valve fails (no direct impact, but if another part
fails it can get ugly)
Action: (detach hose from inflator)
As you see it is important to mount your argon bottle so that
you can easily operate the valve.
Now to the gauge. I dont have one because:
a) it can fail
b) the information is not essential
c) you either add a new point for entanglement (normal hp hose)
or you wont be able to read the gauge (short hp hose)
Of course that means you have to check the pressure BEFORE the dive!
Regards,
Frank
P.S. What is the price of argon over there?
We pay ~$US65 per 350cuft (50l@20* bar) cylinder.
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<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
<tt>Ranjit Chagar wrote:</tt>
<blockquote TYPE=CITE><tt>Morning all,</tt>
<p><tt>To take this subject off to one side for a moment, can anyone tell
me</tt>
<br><tt>the best way to rig argon to a drysuit. My main question is where
does</tt>
<br><tt>the argon cylinder go? Also, would you have a pressure gauge on
the</tt>
<br><tt>cylinder?</tt></blockquote>
<tt>I have mine strapped to the doubles with a custom made retainer.
But</tt>
<br><tt>you can buy pony fixation kits that work fine, too (eg. from
Halcyon</tt>
<br><tt>or Poseidon). The cheapest option is to use straps with
weight</tt>
<br><tt>retainers.</tt>
<p><tt>Top &nbs
p;
Front</tt>
<br><tt>
&n
bsp;
=O---+---O=</tt>
<br><tt> /...\
/...\
+--|--+ +--|--+</tt>
<br><tt>/ \=/
\
| | | |</tt>
<br><tt>| O ||| O |
Tank->|#####|^|#####||-|</tt>
<br><tt>\ /|\ //-\
Bands | | |=====||=| <- Straps</tt>
<br><tt> \.../ ^ \.../ \-/
| | |=====||=|</tt>
<br><tt>------/
\------
|#####|^|#####|+++</tt>
<br><tt>
&n
bsp;
\_____/ \_____/ O <- Keep the valve knobe</tt>
<br><tt>
&n
bsp; &nbs
p;
somewhat above the flor</tt>
<p><tt>Weight
retainer
Weight retainer</tt>
<br><tt>/xxxxxxxxx\ &
nbsp;
|</tt>
<br><tt>|x| |x| |x|
=====
v</tt>
<br><tt>|x| |x| |x|
//
\\ ===</tt>
<br><tt>|x| |x| |x|
||
=A= =</tt>
<br><tt>|x| |x| |x|
||
=B= =</tt>
<br><tt>|x| |x| |x|
\\
// ===</tt>
<br><tt>|x| |x| |x|
=====
<- Strap</tt>
<br><tt>|x| |x| |x|</tt>
<br><tt>\xxxxxxxxx/</tt>
<br><tt> A B</tt>
<p><tt>Another point about argon usage is to consider what happens</tt>
<br><tt>when a piece of equipment fails, how to avoid failure and</tt>
<br><tt>how to make the impact less seviere. Here are just some</tt>
<br><tt>thoughts to that complex:</tt>
<p><tt>a) inflator fails => auto-inflation</tt>
<br><tt>Prevent: operate your 1st at a lower intermediate pressure</tt>
<br><tt> This relievs the
inflator and the hose. Besides it</tt>
<br><tt> makes it easier
to disconnect the hose from the</tt>
<br><tt> inflator. ~100psi
is fine.</tt>
<br><tt> Use an
overpressure
relieve valve to avoid damaging</tt>
<br><tt> of the the lp
hose and drysuit inflator in case of</tt>
<br><tt> 1st. failure.
(Opening pressure ~200psi)</tt>
<br><tt>Action: shut off argon (manually turn on when inflating)</tt>
<p><tt>b) 1st fails => intermediate pressure rises</tt>
<br><tt>Action: shut off argon (manually turn on when inflating)</tt>
<p><tt>c) hose breaks/leaks => argon leaks</tt>
<br><tt>Action: shut off argon (manually turn on when inflating)</tt>
<p><tt>d) valve fails (no direct impact, but if another part</tt>
<br><tt>fails it can get ugly)</tt>
<br><tt>Action: (detach hose from inflator)</tt>
<p><tt>As you see it is important to mount your argon bottle so
that</tt>
<br><tt>you can easily operate the valve.</tt>
<p><tt>Now to the gauge. I dont have one because:</tt>
<br><tt>a) it can fail</tt>
<br><tt>b) the information is not essential</tt>
<br><tt>c) you either add a new point for entanglement (normal hp
hose)</tt>
<br><tt> or you wont be able to read the gauge (short hp
hose)</tt>
<br><tt>Of course that means you have to check the pressure BEFORE the
dive!</tt>
<br>
<p><tt>Regards,</tt>
<p><tt>Frank</tt>
<p><tt>P.S. What is the price of argon over there?</tt>
<br><tt>We pay ~$US65 per 350cuft (50l@20* bar)
cylinder.</tt></html>
--------------9455B6DD3CBBE291E28DC0B7--
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