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| Eh, for a 10 to 20GPA swing, TECHNICALLY it could do it, but you'd be giving up stuff on both sides making it less useful. Generally what you are applying at 10GPA will/should be applied differently than the stuff at 20GPA as well, so I'd be 100% thinking you'd be looking at a separate nozzle.
Again, realistically, you'd be looking at a 10GPA nozzle with PWM that can do in the ballpark of ~9-12.5GPA out of that nozzle at the same pressure/range. Again, you don't want to pick a nozzle that has 10GPA at the minimum as you lose the ability/flexibility to slow down when you need to below 8mph (washouts/headlands/etc/etc).
For your 20GPA rate, pretty much same concept. I'd be looking at a nozzle that could be comfortably doing 15-21GPA ish at a higher pressure, so then you could comfortably drop your pressure for drift reduction situations while on the to without having to slow down.
As far as the reason as to WHY you'd be swapping nozzles (even if you take spray quality out of the mix), it'd be a nozzle SIZE reason only. If you were using a 20GPA nozzle at 9MPH at 100% duty cycle (so it is using 100% of the nozzles capacity, so there is already 0 wiggle room for turn compensation, faster speeds or much of the good stuff that the PWM system can provide), and used it for 10GPA work, then the PWM system would chop the duty cycle down to 50% (as you are using 50% of the nozzles capacity for each pulse). Again, it would put the flow rate on, but generally we'd want to keep duty cycle a bit higher than that to ensure we are not getting physical skips in coverage that are more likely at duty cycles below 40%.
So, if your 20GPA nozzle at 9MPH was spraying at like 8MPH and 10GPA, your duty cycle would start to be dropping into trouble zone, which isn't good for coverage and would be shooting yourself in the foot for a lot at the cost of another set of nozzles.
Again, we/Wilger makes nozzles, but regardless of what sort of brand of nozzles you'd be looking at, I'd be very wary of a nozzle manufacturer/supplier that is saying that you'd be fine to use the same nozzle. Again, if you were doing 10GPA @ 15MPH, and once you did 20GPA you slowed down to 9MPH, that is a totally different situation that eases stuff up a bit, but as a 10-20GPA at typical 8-9MPH speed, you'd be swapping tips regardless of what spray system you'd use. | |
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Individual sprayer nozzle control
