The vyair pumps do have a high flow rate defo not 3 liter a min you will see the difference, but I do have questions on the quality of the pumps . I have used them for 4 years and had a few replacements on pressure switches and also burned out brushes which they do not carry parts for. They are to finicky. I am thinking of giving them miss for new pumps. But they are very good for cleaning high volume work. Hope this helps.
That's the thing, they look and sound good at 10-12 lpm, but in reality will they deliver this much.
I looked at them ever flo pumps, the smallest @ 5lpm looks tiny and then they jump up to higher flo but psi drops rapidly, I don't no anything about psi and all that just to get 100 psi,
Not sure what to do, will have a look over the weekend as am flat out for the next week, so will make do for now,