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Atomizing Spray Nozzles Overview

All stainless steel construction for durability and corrosion resistance.
No Drip models eliminate drips to conserve valuable liquids and improve product finishes!

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

What Are Atomizing Nozzles?

EXAIR’s Atomizing Spray Nozzles atomise 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 atomised 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 1/8”, 1/4″ and 1/2″ sizes.

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 cool hot items in your automated process. These nozzles are also an excellent choice for dust mitigation.

Sound levels for the individual Atomizing Spray Nozzles are not provided. The fluid, pressure, surfaces being treated and surrounding enclosures used in conjunction with the Atomizing Spray Nozzle to form the system will determine the actual sound levels, which can vary greatly. The maximum operating temperature for the atomizing nozzles is 204°C (400°F).

What Are No Drip Atomizing Nozzles?

EXAIR’s patented† No Drip Atomizing Spray Nozzles work in the same way our standard Atomizing Nozzles do but have the added benefit of positively stopping liquid flow when compressed air is shut off. All models use stainless steel construction for durability and corrosion resistance.

When spraying any type of liquid, post-spray liquid flow can cause big problems. Unwanted drips can ruin product finishes on painted or coated surfaces. In addition, excess liquid flow wastes precious resources such as expensive coatings, chemicals or water. EXAIR’s No Drip Atomizing Nozzles are ideal where no post-spray drip is permissible. When the compressed air supply is shut off, the No Drip Nozzle positively seals off the flow of liquid, eliminating the possibility of drips.

They can be used in any situation that our standard Atomizing Nozzles can be used, including Siphon Fed applications. Unlike some manufacturers, there’s no need to run a separate air line to control the no drip mechanism. The same compressed air used to combine and atomise liquid in a variety of patterns is used to open a valve allowing liquid to flow. That makes these ideal for use with EXAIR’s money and energy saving EFC Electronic Flow Control.

Compact No Drip Atomizing Nozzles are fully adjustable to minimise air and liquid consumption.

 

EXAIR’s No Drip Nozzles do not change flow rates from standard Atomizing Nozzles. Operations that require up to 180 cycles per minute can be achieved. Minimum operating air pressure of 2.1 BAR (30 PSIG) required for 1/4″ and 1/2″ nozzles; 1.4 BAR (20 PSIG) is required for 1/8” nozzles.

Air and Liquid Caps are Interchangeable!

Changing liquid volume and/or liquid air pattern can be done in the field. EXAIR’s vast selection of caps are all interchangeable. Only a small selection of available models shown – contact CAA for further details.

Flat Fan Pattern

Deflected Flat Fan Pattern

Wide Angle Round Pattern

Narrow Angle Round Pattern

Hollow Circular Pattern

Applications

  • Washing
  • Rinsing
  • Painting
  • Coating
  • Cooling
  • Quenching
  • Wetting (moistening)
  • Humidification
  • Dust Control

Advantages

  • Fully adjustable
  • Maximise liquid dispersion
  • Minimise liquid consumption
  • All stainless steel construction
  • Compact
  • Versatile
  • Interchangeable liquid and air caps
  • Minimise air consumption
  • Fine atomisation

No Drip Models Additional Advantages

  • Positively stop liquid flow
  • No post-spray drip
  • Easily used with an EFC Electronic Flow Control
  • Operations up to 180 cycles per minute
  • No separate air line needed to control the no drip mechanism

(2) Model EB1030SS External Mix Wide Angle Flat Fan Pattern Atomizing Nozzles are used to give a final sanitary rinse prior to labelling wine bottles.

A Model EF1020SS External Mix Narrow Angle Flat Fan Pattern Atomizing Nozzle is used to supply humidification for a corrosion test chamber.

To prevent sockets from rusting prior to a packaging operation,a Model SF1020SS Siphon Fed Flat Fan Pattern Atomizing Nozzle is used to apply a light coating of oil.

A Model AF1030SS Internal Mix Flat Fan Pattern Atomizing Nozzle is used to spray an anti-corrosion coating on stamped steel parts as they travel on a conveyor.

A Model AD1010SS Internal Mix Deflected Flat Fan Pattern Atomizing Nozzle is used to apply a protective coating to wood panels.

The Model AT5010SS Internal Mix 360° Hollow Circular Pattern Atomizing Nozzle can be used to coat inside diameters or cover a broad area up to 4m (13-ft).

Model AW1030 Internal Mix Wide Angle Round Pattern Atomizing Nozzle is used to keep dust down during charcoal briquette production.

A Model SR1010SS Siphon Fed Round Pattern Atomizing Nozzle is used to supply a cooling mist for a drilling operation.

(2) Model EF1020SS External Mix Round Pattern Atomizing Nozzles are used to apply a fire retardant coating to wood trim.

EXAIR's Atomizing Nozzles and No Drip Atomizing Nozzles are available in
3 basic families:

Internal Mix:

Internal Mix Atomizing Nozzles are for pressure fed applications that don’t require independent air and liquid control.

Internal mix nozzles mix the liquid and air inside the air cap and produce the finest atomisation. Internal mix nozzles can be used on liquids with a viscosity up to 300 cP. Both air and liquid sides are pressure fed.
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External Mix:

External Mix Atomizing Nozzles are for pressure fed applications with independent air and liquid control.

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.
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Siphon Fed:

Siphon Fed Atomizing Nozzles are siphon or gravity fed for non-pressurised applications.

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 914mm (36”). Siphon fed nozzles can be used on liquids with a viscosity up to 200 cP.
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Mounting Brackets / Models

Mounting Brackets For Atomizing Spray Nozzles
Model Description
901786 Mounting Bracket for 1/8″ Atomizing Spray Nozzles
901318 Mounting Bracket for 1/4″ Atomizing Spray Nozzles
901556 Mounting Bracket for 1/2″ Atomizing Spray Nozzles

Droplet Size

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 miniscule 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.

Droplet Size
Model Liquid Pressure Air Pressure Droplet Size
PSI BAR PSI BAR µm*
AN1020SS 20 1.4 40 2.8 71
40 2.8 65 4.5 83
ER1020SS 5 0.3 40 2.8 39
20 1.4 40 2.8 57
SR1020SS 4″ (102mm) Siphon Height 20 1.4 25
40 2.8 22

* Volume Median Diameter DV(50.0) of liquid droplets.
1 µm – 1 micron = 0.00004″. All tests performed with water.

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:

Spray Angle
Atomizing Nozzle Family Minimum Angle Maximum Angle
Internal Mix
Narrow Angle Round Pattern
AN1010SS, AN2010SS, etc.
20° 45°
Internal Mix
Wide Angle Round Pattern
AW1010SS, AW2010SS, etc.
50° 90°
Internal Mix
Flat Fan Pattern
AF1010SS, AF2010SS, etc.
50° 120°
Internal Mix
Deflected Flat Fan Pattern
AD1010SS, AD2010SS, etc.
67° 90°
External Mix
Round Pattern
ER1010SS, ER2010SS, etc.
25° 60°
External Mix
Narrow Angle Flat Fan Pattern
EF1010SS, EF2010SS, etc.
35° 70°
External Mix
Wide Angle Flat Fan Pattern
EB1010SS, EB2010SS, etc.
50° 105°
Siphon Fed
Round Pattern
SR1010SS, SR2010SS, etc.
20° 50°
Siphon Fed
Flat Fan Pattern
SF1010SS, SF2010SS, etc.
50° 100°

Accessories

EFC Electronic Flow Control
Turn off the compressed air when it isn’t needed

EXAIR’s EFC™ is a user-friendly electronic flow control for compressed air that is designed to minimise compressed air use on blowoff, drying, cooling, conveying and static elimination operations. The EFC combines a photoelectric sensor with a timing control that limits compressed air use by turning it off when no part is present. The timing control permits easy tuning to the application requirements while providing flexibility in sensing distance.

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Filters, Regulators, Valves & More

With proper filtration of dirt, moisture and oil from the compressed air supply, EXAIR compressed air products will operate for years with no maintenance required. Use a 5 micron or smaller filter separator on the compressed air supply. To prevent problems associated with oil, use a 0.03 micron or smaller oil removal filter on the compressed air supply. Pressure regulators permit easy selection of the operating pressure, providing infinite control of flow, force and air consumption.

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Installation and Maintenance Sheets

pdf
1/8” Atomizing Nozzles

284.16 KB

pdf
1/4" & 1/2" Atomizing Nozzles

255.94 KB

pdf
1/8” No Drip Atomizing Nozzles

276.88 KB

pdf
1/4" & 1/2" No Drip Atomizing Nozzles

283.83 KB

Atomizing Nozzles PDF Brochure

CAD Drawings

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