Quote from Aps on CFM
2. CFM ratings are meaningless. We do have mass flow numbers at a
given pressure drop. CFM numbers are temperature dependant and therefore
deceptive. Any form of flow figure without a corresponding pressure drop
figure, is, as I said meaningless.
Our TMIC flows 37.5 lbs / min at 0.5 PSIG pressure drop. Depending
on which conversion standard you employ (and therefore temperature
assumption you make), this would be around 550 CFM.