Hollow cone nozzles produce the smallest droplet size of any purely hydraulic nozzle. The spiral grooves in the swirl inserts of these nozzles ensure an efficient whirling of the liquid whch creates uniform droplets throughout. Tangential hollow cone nozzles contain no inserts and teh liquid flows at a right angle, which then creates a whirling rotation inside the nozzle chamber. These nozzles are less prone to clogging.
→ Functional video hollow cone nozzles