Scuba tanks for dust removal...INFO..a better idea!

[gecko@xxxxxxxxxxxxxxxxxx]

Just to let all know a bit more about the scuba tanks since I'm a diver
also..

Scuba tanks are filled with highly filterd air and is VERY dry, moisture
is removed thru the tank refilling process with high end dive tank
compressors.  I have never heard of any vegetable oil being used in the
process though. (Imagine any liability for putting something in someones
brathing air..it just isn't done)  When diving you actually get a very
dry mouth because of this.  The air has to be dry as not to cause any
rust/corrosion INSIDE the dive tanks so I don't think there is any issue
with moisture for using dive tank air for dusting.

Remember if planning on buying a dive tank for this...dive shops will
fill a tank (or supposed to) for only certified divers for safety
reasons.  You'd be quite lucky to get if filled if not 'certified
yourself'...or have someone do it for you.

You CAN get a valve to fill it yourself with conventional compressors,
but not recommended because you will probably get moisture INSIDE it and
create more problems yourself.

Dive tanks need to be inspeceted each year (VIP) or they wont fill them.
$15.00
Every 5 years they need a HYDRO test to make sure they can be pumped up
to 3000psi and not blow up if bad. $25.00

With any release of compressed air from a tank at high rates does cause
condensation inside that is why air compressor tanks have a blead valve
on the main tank.  But using a dive tank to dust off at small bursts
shouldn't cause any problem..I'have used them to fill up air mattresses
with no problems.

Has anyone thought the CHEAPER route of just getting a PORTABLE air tank
like you use to fill up a tire?  Just fill it up at any service station
and you're on the way.  Dive tanks are HEAVY!!!  Go to any auto parts
store, K-mart etc to find one.  (Thats what I'd do) If worried about the
purity of the air, just install a filter in your hose on the way out to
trap any moisture/contamination like most quality air compressors use.
I have them on my photo lab compressor as not to blow out any water that
may form in the condensation process.....

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