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Q: How do you get air into a scuba tank?
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How can you fill a tank of compressed air without an air compresser?

You can use a scuba tank, but that is it.

What do the numbers mean on a scuba tank?

The numbers on a scuba tank reveal 3 things. Serial no. of the tank. Type metal. and the current hydro date.

Mixture of gases for scuba diving tanks compared to normal atmospheric air?

Most SCUBA divers dive with compressed air, which is normal atmospheric air compressed into a scuba tank.

When filling a scuba tank from a high pressure reservoir the air goes from a high pressure reservoir to a low pressure reservoir so the air expands into the scuba tank. Shouldnt this cool the tank?

Think on it a bit closer: -- The expansion is happening in the high-pressure reservoir, as some of the air leaves and the rest expands to fill the volume. So you'd expect the supply tank to cool as it empties. -- The compression is happening in the SCUBA tank, where you're continuously stuffing more and more air into the same volume. So you expect the SCUBA tank to warm as it fills.

Why does your scuba tank not get crushed if it is empty?

a scuba tank is very thick, and so it wont be used if empty the valve remains to be closed, not allowing any air to excape, disallowing to be crushed. if the air cant leave the tank it wont crush.

Is the oxygen and nitrogen in a scuba tank considered a heterogeneous?

I would think so, because there are two of them mixed together. Air in a scuba tank or anywhere else should be heterogeneous. A scuba tank filled with either oxygen or nitrogen would be homogeneous.

Why does a scuba diver need increased gas in the air tank?

Scuba divers require increased air pressures in their air tanks while diving because the pressure on their bodies increases.

How many cubic feet does a 2250 psi scuba tank hold?

A standard-sized SCUBA tank holds 72 cubic feet of air at the standard pressure of 2250 PSI.

You want to convert a SCUBA tank for use as CNG tank?

the silly answer is you can store anything in a scuba tank that you can get in it!!. BUTthe serious answer is scuba tank were designed for compressed air and nothing else... using a scuba tank for natural gas is like driving around with a bomb in your car!!, the valves and collars of the bottles are not strong enough if there was a crash

What is the vest that you wear in scuba diving called and what is its purpose?

The vest is simply called a scuba vest. It's to hold your air tank and regulators :)

What is the best way to keep water out of a scuba tank?

The best way to be sure that water does not enter your scuba dive tank when diving, is to never allow it to be completely be emptied of air pressure. Always plan to leave at least 1-2Mpa (10-20 bars) left in them to ensure that moisture does not enter. If for some reason, the scuba dive tank pressure should be completely exhausted, it is important to immediately close the valve to keep moisture out. When bleeding the air from your scuba tank, be sure to bleed the air slowly, as quick bleeding may cause internal condensation.

What type of gas is in a scuba diver tank?

Air...Sometimes Have Abit Of Oxygen In..But Most Of The Time Just Normal Air.