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The boomless nozzles are basically illegal to use with herbicides up around these parts - you have no control, uneven application, & lots & lots of drift potential. I hear of them from down south so they must have their place, but you couldn't give one away around here. Would work with insecticides or for fruit trees tho, but not for ground application of herbicides. You only want one pump period; from there go through a $70 regulator that has 3 outputs. You can turn the handle to 5 or 6 different possibilites/ combinations of the 3 outputs. Likely plumb your 3 outputs to center section, left wing, right wing. The regulator also has a pressure regulator on it, lets you adjust to different pressures for different products - the bypass from the regulator spits back to the tank, to agitate it & keep your chemicals mixed. Most of the time you will be happy with 20 lbs of pressure on the boom, but depends on the nozzles you choose. Flat fan nozzles at 20 inch spacing is the cheap start, you can pick differet tips or less-drift, less volume, whatever.... --->Paul
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