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DIY boomless sprayer
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<blockquote data-quote="greybeard" data-source="post: 1257903" data-attributes="member: 18945"><p>Drift is usually caused by pressure not matched to nozzle size--or vice versa. Pressure too high causes fine atomization to the point of a mist which = drift in even the slightest breeze. Most nozzles have an operating range---to get larger droplet size (less drift) use the lower end of the reccomended pressure range. </p><p>My 35 gal sprayer uses Boominator type nozzles--I do not care for the sizes I have at all. They do a good job, but in order to get an acceptable swath width, pressure has to be run up so high that they tend to produce a mist. 15' wide is about the best I can do with it and not get drift. They come in different configurations, but here's a simple 180° fan shape.</p><p>Boominator:</p><p><img src="http://www.fs.fed.us/t-d/pubs/htmlpubs/htm08242802/images/fig08.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>On my 300 gal sprayer, I have 2 nozzle setups, controlled by a rotary valve that allows me to choose which nozzle set I want to use, as well as any combination of nozzles and a circulating bypass to mix with. </p><p><img src="https://imagizer.imageshack.us/v2/422x314q90/r/687/sprayer4.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>I have this boomjet cluster nozzle, but since this picture was taken, I added a little short 4' long Fimco setup, that is located below and forward of the boomjet cluster.</p><p><img src="https://imagizer.imageshack.us/v2/640x480q90/r/853/sprayer001.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>The Fimco I use if I don't need a real wide swath or if I want to shut off one side or another (each of the 3 nozzles has an intergal shtuoff valve)</p><p><img src="http://www.fimcoindustries.com/images/DL/units/ATVBK-3025.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p></p><p></p><p></p><p>Boomjet spraying (not my picture) --you can see that it is producing an output that will be large droplet sizes:</p><p><img src="http://www.landscapeonline.com/research/lcn/2006/02/img/Plant%20Growth/Plant-Growth-1.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p>I run it right at 30-35psi while actually spraying. This is the 3rd year I've used this setup--and am pretty happy with how it works--I'd be a lot happier if it weren't so far travel back to the well to refill when I'm done with a tankfull. I do also wish I had bit the bullet and just bought a lower profile cylinder shaped 250-300 gal tank. Climbing up on that trailer to mix chems up on top of that tote is getting wearisome on this old man.</p></blockquote><p></p>
[QUOTE="greybeard, post: 1257903, member: 18945"] Drift is usually caused by pressure not matched to nozzle size--or vice versa. Pressure too high causes fine atomization to the point of a mist which = drift in even the slightest breeze. Most nozzles have an operating range---to get larger droplet size (less drift) use the lower end of the reccomended pressure range. My 35 gal sprayer uses Boominator type nozzles--I do not care for the sizes I have at all. They do a good job, but in order to get an acceptable swath width, pressure has to be run up so high that they tend to produce a mist. 15' wide is about the best I can do with it and not get drift. They come in different configurations, but here's a simple 180° fan shape. Boominator: [img]http://www.fs.fed.us/t-d/pubs/htmlpubs/htm08242802/images/fig08.jpg[/img] On my 300 gal sprayer, I have 2 nozzle setups, controlled by a rotary valve that allows me to choose which nozzle set I want to use, as well as any combination of nozzles and a circulating bypass to mix with. [img]https://imagizer.imageshack.us/v2/422x314q90/r/687/sprayer4.jpg[/img] I have this boomjet cluster nozzle, but since this picture was taken, I added a little short 4' long Fimco setup, that is located below and forward of the boomjet cluster. [img]https://imagizer.imageshack.us/v2/640x480q90/r/853/sprayer001.jpg[/img] The Fimco I use if I don't need a real wide swath or if I want to shut off one side or another (each of the 3 nozzles has an intergal shtuoff valve) [img]http://www.fimcoindustries.com/images/DL/units/ATVBK-3025.jpg[/img] Boomjet spraying (not my picture) --you can see that it is producing an output that will be large droplet sizes: [img]http://www.landscapeonline.com/research/lcn/2006/02/img/Plant%20Growth/Plant-Growth-1.jpg[/img] I run it right at 30-35psi while actually spraying. This is the 3rd year I've used this setup--and am pretty happy with how it works--I'd be a lot happier if it weren't so far travel back to the well to refill when I'm done with a tankfull. I do also wish I had bit the bullet and just bought a lower profile cylinder shaped 250-300 gal tank. Climbing up on that trailer to mix chems up on top of that tote is getting wearisome on this old man. [/QUOTE]
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