Gallons to cubic feet

It never ceases to amaze me why manufacturers do things that they do.

Take compressed air tanks, or receivers, for example.

How come they size the tanks in U.S. gallons, when really, what people need to know is how many cubic feet of air the darn thing holds.

I've done some research, and this is what I've found. In his white paper #5 entitled Air Receivers, Thomas Kreher offers the following for us.

“Receivers, tanks, reservoirs are used to store a volume of compressed air. The sizes of these receivers are often rated in gallons.

To readily convert from gallons to cubic feet:

Divide the number of gallons of the tank size by 7.48

(7.48 gallons = 1 cubic foot)

Also you may multiply gallons by 13.4% (.1337) to get cubic feet. 300 gallons = approximately 40 SCF.”

It's as easy as that, folks.

So, thank you Thomas Kreher for this information.