On 11 Sep 2003 at 9:58, Lee Bell wrote:

> > Do they have a haskel?  Oxygen comes from the gas companies in tanks
> > that are only pumped up to around 2200 psi, hence the fill limit
> > (i.e.
> it's
> > nothing to do with your or your tanks).
>
> I'm pretty sure they do.  What's interesting about Fill Express is
> that they charge by the cubic foot, one price for any nitox from air
> to 100% O2.  Of course they charge differently for trimix.  They're
> the only people around that can fill a half full tank to any specs
> that the addition of some combination of air and O2 will handle.  The
> only way I know of that allows this is to have a haskel.  This is a
> really interesting shop.  It's one of the largest retailers of Dive
> Rite equipment, but that's not what's so cool. The shop's primary
> business is gas fills rather than equipment sales.  I'm probably
> paying a bit higher price per cubic foot, giving them a reasonable
> profit, but because I don't need as many cubic feet to fill a
> partially full tank, I pay less.  It's a win/win that seems to be
> working.
>
> At present, my O2 tank is at 2200 psi.  It was filled from the banks
> at Brownies Southport on the day Brownies was resupplied.  I was not
> particularly happy to hear, later, that Brownies has a hakel too.  If
> what I heard is correct, I'm not particularly happy that they didn't
> fill the tank they sold me to its rated capacity.

You'll be hard pressed to find a 'shop' that will jack O2 much beyond about 2200psi,
even if they have a Haskel. Most gas supply recommendations are that you don't
exceed about 2200.

Mike




--
Mike Wallace
Huntsville, Alabama