Does 13.37 cfm of water translate to 100 gpm of water?

[ContractorDave]

I have a question for you brainy types:

If I have a storage tank full of water with an air supply to the top regulated at 50 psi @ 13.37 cfm, and a sprinkler system fed off the bottom of the tank that's hydraulically calculated to require 100 gpm at 50 psi - does this work? Does the 13.37 cfm of air @ 50 psi translate to 100 gpm at 50 psi of water?

Regards
Dave

 

[IFRs]

Well, 13.37 cfm is equal to 100 gpm if you do the conversions (which I assume you have). The head in the tank will add to the air pressure so the outlet pressure will be higher.

 

[MGXFP]

I hesitate to answer this. It is not equivalent for the fact that air is compressible and water is (virtually) incompressible.