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An aluminum 80 scuba tank filled to 3000 psi holds about how much air?
80 cubic feet of air.
- 50 cubic feet
- 120 cubic feet
- 80 cubic feet ✔
Why: The common aluminum 80 cylinder holds about 80 cubic feet of air when filled to its working pressure of 3000 psi.
Huh, didn't know that: Its inside volume is only about 11 liters; the 80 is the cubic feet of air squeezed in.
Why did the aluminum 80 ace the test? It was under a lot of pressure and handled it.
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References
Answer: 80 cubic feet. The common aluminum 80 cylinder holds about 80 cubic feet of air when filled to its working pressure of 3000 psi.
- DAN Alert Diver: Scuba Cylinder Rundown dan.org/alert-diver/article/scuba-cylinder-rundown
80-cubic-foot (2.3 cubic meter) capacity when filled to its 200 bar/3,000 PSI rated pressure, is by far the most common cylinder
Checked 2026-10-12.
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