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Old 05-11-2008, 09:34 AM
airamp airamp is offline
Join Date: Mar 2008
Location: Scottsdale, Az.
Posts: 684
Default Re: Tutorial: Scuba Power for Lindsay Airgraver

Hi Gail,

Yes you could use Nitrogen (80% of composition of out air) check out the other posts of air composition.

Tanks are cheaper and exchangable at a welding shop, current hydro testes so no added costs for testing a outdated tank. You can get any used tank bring it to a welding shop and they will exchange it for the tank you want with the gas you want. (try for a green or oxygen tank or a gray nitrogen or argon or argon/co2 mix tank common for gas, tig or mig welding) (NO Acetylene tanks)

Used tanks are easy to get (local craig's listed link posted).

No specal fitting. A welding regulator (oxygen) will work just fine also easy to get used. uses 1/4 inch or 3/8 standard brass fittings. (all are 2 stage 2800 to adjustable usable pressures).

The tanks have flat bottoms and steel valve protectors for transport for to and fro to the welding shop.

Down side they are steel and a bit heavy.

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