What is the relationship between nozzle spray angle and coverage?

The spray flow rate increases or decreases roughly in proportion to the square root of the spray pressure under the same medium conditions. The flow rate of any nozzle at a certain pressure can be calculated at any pressure. Suppose the known spray flow rate is Q1 and the corresponding pressure is F1. Find the unknown flow rate Qx when the constant pressure is F2. The relationship is as follows. The theoretical coverage range of the spray shape listed in the table is calculated based on the spray angle and the distance from the nozzle. These values ​​are based on the assumption that the spray angle remains constant throughout the spray distance. In practical applications, the spray angles listed in the table do not apply to spray distances, and the actual spray coverage data chart.

Spray angles listed in the table show approximate spray coverage based on water. In actual spraying, the effective spray angle depends on the spray distance surface meter. If the required spray coverage is a critical point, specific spray coverage data should be obtained. When the liquid is more viscous than water, the spray angle formed is relatively small, and its angle depends on the viscosity, nozzle flow rate and injection pressure. Surface pressure drops of rainwater produce spray angles relatively wider than those listed for water.