The spray angle does not hold for long spray distances. As illustrated in the figure below, the spray angle tends to collapse or diverge as you move away from the orifice. The theoretical coverage of spray patterns at various distances from the nozzle orifice is listed below. These values assume that the spray angle remains constant throughout the entire spray distance. The tabulated spray angles listed are approximate spray coverage using water. Spray distance varies with spray angle. Liquids more viscous than water form smaller spray angles, or solid streams, depending upon nozzle capacity, spray pressure, and viscosity. Liquids with surface tensions lower than water produce wider spray angles than those listed for water.