A properly functioning positive cutoff valve with a suck-back feature will supply what pressure to the boom and nozzles?

A properly functioning positive cutoff valve with a suck-back feature supplies high positive pressure to the boom and nozzles. This design ensures that fluids are efficiently delivered throughout the sprayer system without the risk of backflow or dripping from the nozzles when the system is not in use. High positive pressure is essential in maintaining a consistent and effective application of pesticides or fertilizers, as it promotes adequate coverage and prevents clogging at the nozzles.

In aerial applications, high positive pressure is particularly crucial to effectively deliver the spray material over the intended target area, overcoming any atmospheric pressure variances and ensuring that the spray maintains a uniform distribution. A well-functioning system avoids the drawbacks associated with negative pressures, such as potential suction of contaminants into the system. Hence, the choice of high positive pressure aligns with the operational needs of aerial application sprayers.