21 Jan
2003
21 Jan
'03
3:38 a.m.
The dive shops also sell some smaller and more convenient size tanks
for portability. A 30 cubic foot tank is really easy to handle. They charge
the same to fill a 30 as an 80 though. There are even smaller tanks too.
Some day I plan to make a fill adapter to fill my 30 myself from my 80's.
I'll have to be careful with that though. Fill very slowly to avoid heating
which is one of the reasons they set the tanks in water when they fill
them. Perhaps if the fill rig had a couple of small orifices by each tank,
that would restrict the fill rate for safety. One of the dive supply catalogs
used to list a tank transfer rig, but I could never actually find it. High
pressure
gasses can be very dangerous, so they may have stopped selling them.
At 11:39 AM 1/21/03 -0500, you wrote:
I use a nozzle with a BC quick disconnect fitting on
it. You can get
these at most dive shops. Then use your regulator and connect the nozzle
to the low pressure hose. Works great for lots of jobs. About 120psi
clean air on that hose.
Jay West wrote:
A SCUBA tank is a great idea! Don't know why I
didn't think of that. But I
wouldn't use my normal tank, my luck I'd blow off a ton of dec boards and
forget, then be rather nonplussed when I got to depth. Wonder what's a good
source of a spray nozzel that has a clicky button on the nozzel. Grainger
perhaps?
Jay West
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Dave Mabry dmabry(a)mich.com
Dossin Museum Underwater Research Team
NACD #2093