Pneumatic atomizing nozzles are available in various designs to comply with specific spray and flow requirements:
- Self-aspiration (siphon principle)
- Supply of liquid from a vessel located at a higher level (gravity principle)
- Supply of liquid under pressure (pressure principle)
- mixing fluids inside or outside the nozzle
- full cone or flat fan spray pattern
Pneumatic flat fan atomizing nozzles produce a flat spray pattern with extremely fine droplets and spray angles up to 80°. These nozzles are particularly suited for applications requiring fine droplets and a wide linear impact.
Pneumatic full cone atomizing nozzles, however, are preferably used for applications demanding uniform circular impact patterns or larger spray distances. Generally, a narrow full cone with approximately 20° – 30° is formed. Wider spray angles can be achieved by using special multi-orifice designs.