Tag: atomizing spray nozzles

Atomizing Nozzles – No Drip Deflected Flat Fan and 360° Hollow Circular

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EXAIR manufactures three types of Atomizing Nozzles – Internal Mix, External Mix, and Siphon Fed.  Within the Internal Mix family, there are two specialty nozzles, the Deflected Flat Fan and the 360° Hollow Circular patterns.

Internal Mix nozzles are for pressure fed applications not requiring independent air and liquid control.

The model AD2010SS is the No Drip version of the Deflected Flat Fan and is shown below. Our patented No Drip design prevents unwanted post spray drips from wasting expensive fluids or ruining product finishes. The benefit to this design is that no secondary compressed air line is necessary to activate the on/off valve for the liquid, which is the case for competitive nozzles.

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Model AD2010SS – No Drip Internal Mix Deflected Flat Atomizing Nozzle

The Deflected Flat Fan patterned nozzle is designed for applications where space is a limited.  The spray pattern is at a right angle to the orientation of the nozzle, allowing the spray to be placed precisely where it is needed in tight quarters.  They are ideal for coating the insides of enclosures and ductwork.

NoDripIMDF

The model AT2010SS is the No Drip version of the 360° Hollow Circular and is shown below.

AT2010SS
AT2010SS – No Drip Internal Mix 360° Hollow Circular Atomizing Nozzle

The 360° Hollow Circular patterned nozzle is designed for applications where the spray pattern is to be orientated away form the nozzle in all directions.  They are ideal where a smooth and even coating is needed on the internal surface of a pipe or duct.  They are also good for processed where a mist is needed over a large area, including dust suppression, humidification, and cooling.

NoDripIM360HC-Pattern

The No Drip feature is a patented† design that has the added benefit of positively stopping the liquid flow when the compressed air is shut off. Post spray liquid flow can cause quality issues from unwanted drips on painted or coated surfaces.  Also, the No Drip feature helps to conserve and save on liquid use, reducing costs of expensive coatings or chemicals.

When the compressed air supply is shut off, the No Drip nozzle positively seals off the flow of liquid, eliminating over spray and drips. The design allows for just one compressed air line, there is no need for an additional to control the No Drip mechanism.

If you have questions about Atomizing Spray Nozzles, or would like to talk about any of the EXAIR Intelligent Compressed Air® Products, feel free to contact EXAIR and myself or any of our Application Engineers can help you determine the best solution.

Brian Bergmann
Application Engineer

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Twitter: @EXAIR_BB

† Patent #9156045

 

No Drip Internal Mix Atomizing Nozzles

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Eliminate drips to conserve valuable liquids and improve product finishes!  EXAIR’s patented No Drip Atomizing Nozzle provides the same great performance as the the standard atomizing nozzles with the added benefit of positive liquid flow stoppage when the compressed air is shut off.

The No Drip option eliminates the occurrence of post spray liquid flow that results in unwanted drips that can mar a finish on painted or coated surfaces.  Also, excess liquid loss is minimized saving on expensive materials like chemicals or coatings.  When the compressed air is shut-off, the No Drip nozzle positively seals off the flow, eliminating the chance for a drip or lost liquid. Only one compressed air line is needed, as the line to combine and atomize the liquid also provides the no drip operation and control.

The No Drip Atomizing Nozzles are available in (3) types – Internal Mix, External Mix, and Siphon Fed.

The Internal Mix type operates under the principle that the air and liquid come together and mix ‘internal’ to the nozzle.  This type provides the finest atomization and smallest droplet size. The Internal Mix type of nozzle can be used with liquids up to 300 cP in viscosity.  Both the air and liquid sides are pressure fed.  The No drip Internal Mix Atomizing Nozzles are best for pressure fed applications not requiring independent air and liquid control.

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A No Drip Internal Mix Flat Fan Nozzle applying anti-corrosion fluid to stamped parts

The No Drip Atomizing Nozzles are available in (3) sizes – 1/8, 1/4, and 1/2 NPT – to provide a wide range of flow rates and pattern sizes.  The No Drip feature does not impact the flow rates compared to the standard models.  Minimum air pressure operation is 30 PSIG for the 1/4 and 1/2 NPT, and just 20 PSIG for the 1/8 NPT models.

Like the standard Internal Mix Atomizing  Nozzles, spray patterns include narrow and wide angle round, flat fan, deflected flat fan and a 360° hollow circular pattern offering a wide selection to best meet the application needs.

Operation at up to 180 spray cycles per minute is possible.  Air and Liquid Caps can be switched out to change the pattern and flow rates.

Typical Applications

  • Painting
  • Coating
  • Rinsing
  • Cooling
  • Quenching
  • Wetting
  • Humidification
  • Dust Control

Advantages

  • No post spray drip
  • Adjustable
  • Easily used with EFC
  • Minimizes air and liquid consumption
  • All stainless steel construction
  • Fine atomization
  • Interchangeable liquid and air caps
  • Compact

If you need an Atomizing Spray Nozzle or any of the EXAIR Intelligent Compressed Air® Products, feel free to contact EXAIR and myself or one of our Application Engineers can help you determine the best solution.

Brian Bergmann
Application Engineer

Send me an email
Find us on the Web 
Like us on Facebook
Twitter: @EXAIR_BB

EXAIR Atomizing Spray Nozzles Explained

Published on by Russ BowmanLeave a comment

From their introduction just a few short years ago, to the addition of ½ NPT units more recently, EXAIR’s line of Atomizing Spray Nozzles has quickly become one of our most diverse product lines. We’ve got:

*44 Models to choose from. Technically, 88, if you count the patent pending No-Drip feature that they’re all available with.  More on that in a minute.

*Numerous styles:
–Internal Mix Spray Nozzles provide the widest range of adjustment. Changes to air pressure, liquid pressure, and the needle valve position will all change the flow rate and pattern. The ¼ NPT models come in Narrow or Wide Angle Round, Flat Fan, Deflected Flat Fan, and Hollow Circular Patterns.
The ½ NPT models come in Narrow or Wide Angle Round, Flat Fan, or Hollow Circular Patterns.

Narrow Angle Round Pattern Internal Mix Atomizing Spray Nozzle
Narrow Angle Round Pattern Internal Mix Atomizing Spray Nozzle

External Mix Spray Nozzles give you the option of changing the flow rate and pattern independently, by changing the liquid or air supply pressures, respectively. The ¼ NPT models come in Round and Narrow or Wide Angle Flat Fan patterns. The ½ NPT comes in Narrow Angle Flat Fan pattern only. These are also the best choice for higher viscosity fluids.

External Mix Atomizing Spray Nozzles offer independent adjustment of flow rate and pattern.
External Mix Atomizing Spray Nozzles offer independent adjustment of flow rate and pattern.

Siphon Fed Spray Nozzles are used when it is impractical or undesirable to pressurize the liquid supply. By changing the siphon (or gravity) height, these nozzles, unit for unit, provide the widest adjustability in flow rate. The ¼ NPT models come in Flat Fan and Narrow or Wide Angle Round patterns. The ½ NPT comes in Round pattern only. Because they rely on an unpressurized feed of liquid, these are best suited for liquids with lower viscosities.

No-Drip Feature: All of our Atomizing Spray Nozzles are available with a No-Drip feature…they use the compressed air supply to open the valve, and when it’s turned off, so is the nozzle – with no air supply, an internal needle valve positively stops the flow of liquid.

  • Availability. All of these are in stock, ready to ship same day.
  • Mounting Brackets. Our “clip” style brackets provide for quick and easy mounting & support.
  • Expertise. This is where the rubber hits the road. Or, perhaps I should say, where the coating hits the wood, the paint hits the steel, the coolant hits the surface, etc. By that, I mean that whatever you want to spray, mist, coat, quench, wet down, cool, rinse, etc., we’re ready to discuss your particular application and help you find the right Spray Nozzle. Call us to find out more.

Russ Bowman
Application Engineer
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No Drip Atomizing Nozzle Improves Deep Drawn Metal Process

Published on by Russ BowmanLeave a comment

The other day, I had the pleasure of helping a caller select an Atomizing Spray Nozzle for a particular application. They needed to apply a thin, quick drying coat of vanishing oil to the inside diameter of a round, deep drawn metal part. They were currently flooding the ID with it, and the part had to sit overnight to dry.

Since it was a cylindrical hole, it sounded like an ideal application for a Round Pattern nozzle, and, since they didn’t have an easy way to pressurize the oil source, we selected a Model SR2040SS No-Drip Siphon Fed Round Pattern Atomizing Spray Nozzle. By adjusting the siphon height and air pressure applied, they were able to quickly achieve the desired flow pattern and coating thickness.

nodrip_SR

Now, they’re able to take the part directly to the next step in their fabrication process, without the overnight drying cycle.

Russ Bowman
Application Engineer
EXAIR Corporation
(513)671-3322 local
(800)923-9247 toll free
(513)671-3363 fax
Web: http://www.exair.com
Blog: http://blog.exair.com/
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