Nitrox with titanium or aluminium regulators

"Rich Lockyer" <rlockyer@linkline.DONTSPAMME.com> wrote in message
news:8qleg01rqtjqe6jet0jitar5e49bmpoe2a@4ax.com...
> On Tue, 27 Jul 2004 19:42:02 -0700, "Scott" <scottk@localaxes.com>
> wrote:
>
> >Titanium or aluminum, if ground into fine enough particles, will ignite
upon
> >exposure to air alone.
>
> Especially in the presence of a 480vac arc.
>
> Ouch.
>
> I think I can still see the purple trails from that one, and it was 20
> years ago.

Few things are more apt to wake you right-the-fuck-up like a titanium or
magnesium fire in the chip pan of your lathe...

"kiwitwat" <kiwitwat@furby.co.nz> wrote in message
news:kd3eg05lc44dskee2hrk04coudta30hru3@4ax.com...
> Hi all. I have been told you cannot use titanium or aluminium
> regulators for nitrox (enrichd air in PADI speak). Is this true.? If
> so, does the oxygen % have a limit or is it for all mixes above
> ordianr air? TIA

I seem to remember a photo of (the remains of) a titanium reg that had 100%
put through it.
Nasty.

IIRC according to the BSAC you should never use titanium regs with anything
other than air. I would have expected that to be covered in pretty much any
nitrox course mind you...

Alun Harford

In article <kd3eg05lc44dskee2hrk04coudta30hru3@4ax.com>,
kiwitwat <kiwitwat@furby.co.nz> wrote:
>
>
>Hi all. I have been told you cannot use titanium or aluminium
>regulators for nitrox (enrichd air in PADI speak). Is this true.? If
>so, does the oxygen % have a limit or is it for all mixes above
>ordianr air? TIA

There should be no problem with FO2s under 40%.

DO NOT use either material with FO2s over 40%. There is a severe risk of
fire if you do; Titanium and Aluminum both burn handily in enriched O2
mixtures.

A line of medical regulators built for O2 use out of Aluminum was recalled
after several of them caught fire for this very reason.

--
--
Karl Denninger (karl@denninger.net) Internet Consultant & Kids Rights Activist
http://www.denninger.net My home on the net
http://scubaforum.org Your UNCENSORED place to talk about DIVING!
http://boaterforum.com Talk about Boating online - any topic, any time!
http://www.spamcuda.net SPAM FREE mailboxes - FREE FOR A LIMITED TIME!

On Tue, 27 Jul 2004 19:56:37 -0700, "Scott" <scottk@localaxes.com> wrote:

>
>"kiwitwat" <kiwitwat@furby.co.nz> wrote in message
>news:kd3eg05lc44dskee2hrk04coudta30hru3@4ax.com.. .
>> Hi all. I have been told you cannot use titanium or aluminium
>> regulators for nitrox (enrichd air in PADI speak). Is this true.? If
>> so, does the oxygen % have a limit or is it for all mixes above
>> ordianr air? TIA
>
>http://www.cyberdiver.net/gear/gearr...ecall_dan.html

That's pure O2, not nitrox.


>http://www.fda.gov/cdrh/oxyreg.html

O2 again.

God help all the fools putting 3000 PSI O2 in their Al cylinders....

safe diving,

bullshark

"bullshark" <bullshark@gmail.com> wrote in message
news:19rpg0tmne5qvbuj1seh9oibms1m6qivkl@4ax.com...

> On Tue, 27 Jul 2004 19:56:37 -0700, "Scott" <scottk@localaxes.com> wrote:
>
> >
> >"kiwitwat" <kiwitwat@furby.co.nz> wrote in message
> >news:kd3eg05lc44dskee2hrk04coudta30hru3@4ax.com.. .
> >> Hi all. I have been told you cannot use titanium or aluminium
> >> regulators for nitrox (enrichd air in PADI speak). Is this true.? If
> >> so, does the oxygen % have a limit or is it for all mixes above
> >> ordianr air? TIA
> >
> >http://www.cyberdiver.net/gear/gearr...ecall_dan.html
>
> That's pure O2, not nitrox.

No shit, eh? It's a little background so that he might educate himself and
draw his own conclusions.

> >http://www.fda.gov/cdrh/oxyreg.html
>
> O2 again.

No shit, eh?

> God help all the fools putting 3000 PSI O2 in their Al cylinders....

That's funny, because we do it all the time with rebreathers. As a matter of
fact, I know dozens of divers that do it for AL80 deco stage bottles every
weekend.

Cleanliness and fill rate. Not rocket science or voodoo, no need to invoke
God.

And, as I indicated, if the aluminum, magnesium (ask Mike why they don't
sell mag wheel anymore) or titanium particles are small enough, or the edges
of the chips fine and ragged enough, they will ignite spontaneously upon
exposure to good ole 21%. I personally, over the course of 30 years, have
had 2 fires in the chip pan of my lathe, one on titanium, one on magnesium.

That being said, I think aluminum or titanium regulators are nothing more or
less than marketing hype.

On Sun, 1 Aug 2004 09:16:03 -0700, "Scott" <scottk@localaxes.com> wrote:
>> God help all the fools putting 3000 PSI O2 in their Al cylinders....
>
>That's funny, because we do it all the time with rebreathers.

That was a joke, son. It's a shame you didn't see it.

Any fool knows how many deco bottles are full of O2.
Then again, I'm not just any fool. Glad to see you noticed.
(Should I put a smiley face in there, or will you get it?)

safe diving,

bullshark

"bullshark" <bullshark@gmail.com> wrote in message
news:78iqg0991erhls3n77cncnb55s1djv4jmd@4ax.com...
> On Sun, 1 Aug 2004 09:16:03 -0700, "Scott" <scottk@localaxes.com> wrote:
> >> God help all the fools putting 3000 PSI O2 in their Al cylinders....
> >
> >That's funny, because we do it all the time with rebreathers.
>
> That was a joke, son. It's a shame you didn't see it.
>
> Any fool knows how many deco bottles are full of O2.
> Then again, I'm not just any fool. Glad to see you noticed.
> (Should I put a smiley face in there, or will you get it?)

Maybe if you weren't trying so hard to be such a condescending, caustic,
prick all the time, then you could get a joke or two yourself.

In article <10gr98tphp1l240@corp.supernews.com>, Scott
<pugetsounddiver@gmail.com> wrote:

€ Maybe if you weren't trying so hard to be such a condescending, caustic,
€ prick all the time, then you could get a joke or two yourself.

Now that's just sad.

Guy has to make an effort to be a prick...

--
"We're going to rush the hijackers."
-Jeremy Glick, aboard United Airlines flight 93, September 11, 2001

On Sun, 1 Aug 2004 19:23:27 -0700, "Scott" <pugetsounddiver@gmail.com> wrote:
>Maybe if you weren't trying so hard to be such a condescending, caustic,
>prick all the time, then you could get a joke or two yourself.

Classic pot/kettle if I ever saw it.

Thanks for all the help. I'm not buying one of these- I'm looking at
selling them but when you're in the bussiness every wholesaler has a
different story depending on what they sell so their opinions are less
than usfull. People in this newsgroup may not always agree with each
other but all the info given is appeciated and taken into account.
Regards Neil