Atomizing Nozzles Overviews

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Atomizing Nozzles Overviews
What Are Atomizing Nozzles?
EXAIR’s atomizing spray nozzles atomize fluids (most commonly water) in a range of spray patterns for a variety of uses. They combine liquid and compressed air to create a mist of atomized liquid that can be easily adjusted to meet the needs of your application. All models use stainless steel construction for durability and corrosion resistance. Atomizing spray nozzles are available in 1/4 NPT and 1/2 NPT sizes. EXAIR's atomizing nozzles are available in 3 basic families:

 

A Model AN1010SS Narrow Angle Atomizing Nozzle is used to mark strips of steel before they leave the mill.

External Mix Liquid Atomizing Nozzles
A Model AN1010SS Internal Mix Narrow Angle Round Pattern Atomizing Nozzle is used to mark strips of steel before they leave the mill.  Model EB1030SS External Mix Wide Angle Flat Fan Pattern Atomizing Nozzles are used to give a final sanitary rinse prior to labeling wine bottles.
 Siphon Fed Liquid Atomizing Nozzles  A Model SR1010SS Siphon Fed Round Pattern Atomizing Nozzle is used to supply a cooling mist for a drilling operatio

Internal Mix:

Internal mix nozzles mix the liquid and water inside the air cap and produce the finest atomization. Internal mix nozzles can be used on liquids with a viscosity up to 300 cp. Both air and liquid sides are pressure fed. >More

 External Mix:

External mix nozzles have the highest flow rates and allow the air and liquid flows to be adjusted independently. These nozzles are best where precise liquid flow is needed. External mix nozzles can be used on liquids with a viscosity above 300 cp. Both air and liquid sides are pressure fed. >More

Siphon Fed:
Siphon fed nozzles require no liquid pressure and can be used with gravity fed liquids or lift liquids from a siphon height as much as 36 inches (91cm). Siphon fed nozzles can be used on liquids with a viscosity up to 200 cp. >More

Why Atomizing Nozzles?

With EXAIR’s atomizing nozzles, you can coat, cool, treat and paint a variety of products. Used with water, atomizing nozzles are an efficient way to evenly cool hot items in your automated process. These nozzles are also an excellent choice for dust mitigation. The maximum operating temperature for the atomizing nozzles is 400°F (204°C).

Advantages Applications
  • Fully adjustable
  • Maximizes liquid dispersion
  • Minimizes liquid consumption
  • All stainless steel construction
  • Compact
  • Versatile
  • Interchangeable liquid and air caps
  • Minimizes air consumption
  • Fine atomization
  • Washing
  • Rinsing
  • Coating
  • Cooling
  • Quenching
  • Wetting (moistening)
  • Humidification
  • Dust Control

 

 

Droplet Size and Spray Angle

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Dropletsize_chart624x220 Exair Products

Droplet Size

droppletsize Exair Products

One of the primary reasons atomizing spray nozzles are used is because of their fine droplet size. Benefits of fine droplet size include even coating and liquid conservation. For reference, a large raindrop is around 6,000 microns (0.236") in diameter. Standard liquid nozzles produce droplet sizes ranging from 4,000 microns (0.157") down to 300 microns (0.012") in diameter. EXAIR's Atomizing Nozzles produce minuscule droplet sizes in the range of 100 microns (0.004") to 20 microns (0.0008")!

Droplet size can be adjusted by varying either the air or liquid pressure. An increase in air pressure or decrease in liquid pressure will generally produce a smaller droplet size. Below is a chart showing various models of atomizing air nozzles and their droplet sizes at selected pressures.

Spray Angle

The Spray Angle is the trigonometric angle created by the width of the spray pattern and the distance at which it is measured. This angle can vary greatly within a given family of atomizing nozzles depending on flow rates and pressures, but will generally fall into the ranges below:

 

 

 

 

 

 

sprayangles Exair Products