Many need to protect sensitive areas down-wind, including shelterbelts or neighbouring fields. For those, and others, low drift spray methods provide an important option that can mean the difference between spraying in a timely manner or causing drift damage. Venturi nozzle spray at 70 psi Click to expand Since there are more nozzle types on the market now than ever before, applicators may have trouble deciding which nozzle best fits their needs. This information summarizes the main characteristics of major low-drift nozzles, and shows each nozzle overlayed on the image of the spray deposit produced by that nozzle. Standard flow rates are established at 40 psi.
Quoted prices are approximate, per nozzle tip.
Although most venturi tips are rated at minimum pressures of 30 to 40 psi, they need to be operated at higher than normal pressures to give optimum performance over a range of conditions. The exception is the Air Bubble Jet, which is designed to work at conventional pressures. Even at pressure of 60 to 80 psi, the remaining venturi nozzles still provide excellent drift protection. Using lower than the recommended pressures may cause the pattern to collapse, and will reduce the activity of the air-induction mechanism. Without the inclusion of air in the droplets, the ability to maintain proper coverage can be reduced.