I have an older 60 gallon that puts out 15cfm. I probably had it set to 110-120psi since I think that was before I had a regulator on it.
The tool is a real piece of junk and I had to shake it quite a bit to get the soda to flow, but if you only have one or two (or 4) carbs to do, you can get it done for $20 in an hour or two.
And if you do it just before it rains, your neighbors won't even know!
