If i put two identical compressors in serial would the scfm change?

by Jeff Browning
(Austin Texas)

I have 2 - 21 gallon compressors, identical, 125 max working psi, 2.5 running hp, 4.7 scfm @ 90 psi, 5.8 scfm @40 psi.


So i have tank one running a line into tank 2, and check valve in, so flow is one way. Tank 2 produces its own air, as well as what is injected into it from tank 1.

I take air from tank 2 via the pressure regulator valve.

Does my cfm change because i have increased volume of air from 21 to 42?

How is this calculated. I want to run a DA sander rated at 2.8 cfm @90 psi.

I should be good, but also would like to paint with this setup.

Comments for If i put two identical compressors in serial would the scfm change?

Click here to add your own comments

Jun 17, 2016
serial?
by: Doug in s.d.ca

Actually, that setup is parallel, and has nothing to do with the tanks.

As you should see when you read the page Bill referred you to, your CFMs increase because you will, if the load is large enough, have both compressors running simultaneously.

Jun 16, 2016
If i put two identical compressors in serial
by: Bill

Pretty much all covered on the pages of this site already, Jeff.

Please see the sitemap page under CFM and flow for lots of info.

Click here to add your own comments

Add your own question or comment. It's easy to do. How? Simply click here to return to CFM-SCFM-PSI-compressor-flow-issues.