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Air Blast Sprayer
I made this "air blast" sprayer using the fan from an old orchard sprayer. It mounts on the back of my field sprayer and runs off the field sprayer pto drive. I made the frame out of I-beam, channel iron and tube steel and used swivel wheels from an old David Bradley hay rake. It's fitted with an 8-roller pump, pto-driven by #50 roller chain so that it runs at 1,000 rpm's and produces 200 psi. The pto shaft runs under the tank and axle. The fan is driven by #80 sprockets and chain. I attach the sprayer to the back of my field sprayer with two pins.
I've used the machine 4 years with little servicing other than oiling the chains. It works as well as any commercial air blast sprayer on the market. I built it so I wouldn't have the maintenance of two separate sprayers and it cost just $300. I use the same valves to control the air blast sprayer as I use to control the spray booms. The 200 gal. tank lets me treat 4 acres of vegetables on one fill. To disconnect, I just remove the two pins and unhook the hoses. (Enos Burkholder, Rt. 2, Box 2060, Fleetwood, Penn. 19522 ph 215 944-7475)

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1992 - Volume #16, Issue #4