So psi's is the force behind the air, cubic feet is the amount of air available to breathe.
I would rather have 100 cubic feet available at 2500 psi's than 80 cubic feet available at 3500 psi's, all other things being equal.
So psi's is the force behind the air, cubic feet is the amount of air available to breathe.
I would rather have 100 cubic feet available at 2500 psi's than 80 cubic feet available at 3500 psi's, all other things being equal.
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