Near Intersection of I-35 & I-90 Southern Mn. | I agree with the above except for the NOT being measured implication.
On all the systems I've owned and setup, the small liquid line that goes back into the heat exchanger to provide cooling has been tee'd off at a location AFTER the flow meter so it too has been measured. As mentioned the vapor exiting the heat exchanger is directed to the ground so it is not wasted. A couple of knives have the vapor tubes on them and could possibly receive a bit more product than the others but the amount is negligible as the holes in the knives are not very precise anyway.
Actually I have a used Raven system without a display on an older bar in my shed which I would sell. I hire a friend to apply my NH3 lately as he has a large tractor and bar of his own.
Edited by tedbear 3/30/2020 07:48
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Nh3 cooler
