No Drip, External Mix, Atomizing Spray Nozzle Overview

 

No Drip ASN
EXAIR’s No Drip, External Mix, Atomizing Spray Nozzle In Action!

EXAIR’s Atomizing Spray Nozzles are used to clean, coat, or cool parts and they also lend themselves very well to humidification and dust control.  They are constructed from rugged and durable 303 SS to provide corrosion resistance and they can operate in temperatures up to 400°F (204°C). All EXAIR Atomizing Spray Nozzles are also CE compliant.

Atomizing Nozzles are separated into 5 categories – Internal Mix, External Mix and Siphon Fed, Deflected Flat Fan, and Internal Mix 360° Hollow Circular Pattern.  They are available in 1/8″, 1/4″ & 1/2″ NPT to make it easy to provide the coverage and flow rate you need for nearly any application.  For today’s focus, we will discuss the No Drip External Mix Atomizing Nozzles.

External Mix Atomizing Nozzles have the highest flow rates and are ideally suited where precise liquid flow is required and both the air and liquid are pressurized.  Also the External Mix Atomizing Spray Nozzles can easily atomize liquids with a viscosity above 300 cP (Centipoise).

Centipoise is defined as a dynamic viscosity measurement unit. A Centipoise (cP) is a non-SI (non-System International) measurement unit of dynamic viscosity in the centimeter gram second (CGS) system of units.

Centipoise Chart

Our patented No Drip feature positively stops the liquid flow when the supply air pressure drops below 20 PSIG for 1/8″ NPT Nozzles or 30″ PSIG for the 1/4″ or 1/2″ NPT. By incorporating this feature into the design, it eliminates the need for any additional valves or supply lines.  They are available in flow rates that range from less than 2 GPH (7.57 LPH) for our Model EF9010SS 1/8 NPT No Drip External Mix Narrow Angle Flat Fan Pattern and up to 303 GPH (1,147 LPH) for the Model EF6010SS 1/2 NPT No Drip External Mix Narrow Angle Flat Fan Pattern.

When making a selection, below are some points to consider:

  1. Volume of liquid required?
  2. What is the viscosity of the liquid?
  3. What type of spray pattern fits the application?

If you would like to discuss External Mix No Drip Air Nozzles or any of EXAIR’s safe, quiet & efficient compressed air products, I would enjoy hearing from you…give us a call.

Steve Harrison
Application Engineer
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No Drip, Atomizing Spray Nozzle, Siphon Fed Overview

EXAIR’s Atomizing Spray Nozzles are used to clean, coat, or cool parts and they also lend themselves very well to humidification and dust control.  They are constructed from rugged and durable 303 SS to provide corrosion resistance and they can operate in temperatures up to 400°F (204°C).  All EXAIR Atomizing Spray Nozzles are also CE compliant.  The No Drip Atomizing Nozzles are available in (5) types – Internal Mix, External Mix, and Siphon FedDeflected Flat Fan & 360° Hollow Round Pattern.

For today’s topic we will focus on EXAIR’s Siphon Fed No Drip Atomizing Nozzle.  They provide the same great performance as the standard atomizing nozzles with the added benefit of positive liquid flow stoppage when the compressed air supply is shut off.

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EXAIR’s No Drip Atomizing Nozzle In Action

The No Drip option eliminates post spray liquid flow that can result in unwanted drips that can ruin the finish on painted or coated surfaces.  Also, liquid loss due to post spraying cycle drips is eliminated saving  you money on expensive materials such as chemicals or coatings.  When the compressed air is turned-off, the No Drip nozzle positively seals off the liquid flow, eliminating the chance for drips or wasted liquids. Only one compressed air line is required, as this single line that is used to create the atomized liquid flow also operates the no drip feature.

No Drip Atomizing Nozzles require a minimum air pressure of 20 PSI for the 1/8 NPT models and 30 PSI for the larger 1/4 & 1/2 NPT sizes to turn on.  This is similar to a check valve and the pressure required to open the valve which can be referred to as the “cracking pressure”.

The Siphon Fed Atomizing Nozzles require no liquid pressure to operate and can be used with either gravity or siphon feeds.  The 1/8 NPT & 1/4 NPT can draw liquid up to 36″ vertically and the 1/2 NPT size up to 24″ vertically!  They are designed to be used with liquids up to 200 cP and can spray either a round or flat fan pattern for the 1/8 NPT & 1/4 NPT.  The 1/2 NPT nozzle is available in the round spraying pattern only.

Centipoise is defined as a dynamic viscosity measurement unit. A Centipoise (cP) is a non-SI (non-System International) measurement unit of dynamic viscosity in the centimeter gram second (CGS) system of units.

Centipoise Chart

Don’t forget the optional Mounting Bracket that is available.  Naturally there are (3) sizes available to fit the size nozzle you are using (1/8, 1/4 or 1/2 NPT).  They are constructed from 301 SS and allow any Atomizing Spray Nozzle to be easily attached to a wall, frame or other surface.

Some key points to consider when determining which Atomizing Spray Nozzle will work best in your application are:

  1. Volume of liquid required for your process?
  2. What is the viscosity of the liquid?
  3. What type of spray pattern fits the application?

If you would like to discuss No Drip Siphon Fed Atomizing Nozzles or any of EXAIR’s safe, quiet & efficient compressed air products, I would enjoy hearing from you…give us a call.

Steve Harrison
Application Engineer
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EXAIR Internal Mix Atomizing Nozzles: Deflected Flat Fan & Hollow Circular Pattern

EXAIR Atomizing Nozzles

In today’s market, the cost of consumable products are on the rise; especially with paints, oils, and yes, even the cost of water.  You can help alleviate some of that cost by being more efficient when spraying.  The EXAIR Atomizing Nozzles are designed to accomplish this objective of saving fluid.  With the help of compressed air, the liquid can be sheared into smaller micron-sized droplets.  For reference, if the radius of a particle is reduced by one-half, this will increase the number of droplets by eight.  With smaller diameter particles, the surface area and coverage will increase; thus, reducing the liquid requirement in your application.  EXAIR manufactures three families of Atomizing Nozzles; Internal Mix, External Mix, and the Siphon Fed in three different body sizes to accommodate for the different liquid flow rates.  In this blog, I will be discussing the Internal Mix Atomizing Nozzles with two specific spray patterns; the Deflected Flat Fan and the 360o Hollow Circular Pattern.

To start, the Internal Mix Atomizing Nozzles are designed; like the name suggests, to atomize the liquid inside the nozzle.  The pressurized liquid and compressed air are separated until they get into the “mixing” chamber.  The mixing chamber is created by two types of caps; a liquid cap and an air cap.  The liquid cap is designed to create a high velocity air stream to “break” up a small liquid droplet.  The air cap is then used to create the spray pattern for applying the liquid material more effectively.  The Deflected Flat Fan and the 360o Hollow Circular Pattern are the air caps.

Deflected Flat Fan Air Cap

The model AD1010SS, deflected flat fan atomizing spray nozzle, sprays small micron-sized particles at a right angle.  This type of air cap works very well to direct the atomized fluid like paints and coasting onto surfaces.  These nozzles are also useful for spraying liquids in close quarters like inside ductwork or enclosures.  The viscosity of the pressurized liquid has to be under 300 CPS, and it can spray as much as 6.9 GPH (26 LPH) of fluid.  The model AD1010SS has ¼” NPT inlets and has a manual liquid valve to precisely control the amount of fluid being sprayed to eliminate any runs.  EXAIR also offers a No-Drip option with this Atomizing Nozzle; model AD2010SS.  This option will not allow the liquid to drip from the nozzle when not in use.  This is a great option for reducing liquid waste from drips and for intermittent spraying.   If a right-angle spray pattern is required, both models will work well to accomplish this.

 

360 Hollow Circular Pattern Air Cap

The 360o Hollow Circular Pattern Internal Mix Atomizing Nozzle sprays the atomized liquid outward in all directions.  This works well for applications where wide areas are needed to be covered.  It can also be used inside pipes and ductwork that needs to be covered around the circumference.  With liquid water applications, they are the primary atomizing nozzles for humidification and dust suppression.  The small particles of water can be sprayed in the ambient air to increase the relative humidity as well as “clinging” to dust particles to weigh them down.  This type of atomizing nozzle is manufactured in two types of body styles; the AT1010SS, ¼” NPT inlets, and the AT5010SS, ½” NPT inlets.   The AT1010SS has a maximum spray volume of 14.7 GPH (55.7 LPH) while the AT5010SS has a maximum spray volume of 150 GPH (568 LPH).  The unique design of the air cap creates a very wide spray diameter up to 53” (135 cm) for the AT1010SS and 156” (396 cm) for the AT5010SS.  As with the Deflected Flat Fan, these atomizing nozzles are available with the No-Drip option; AT2010SS and AT6010SS respectively.

If you need to maximize your liquid dispersion and minimize liquid consumption, the EXAIR Atomizing Nozzles are the products to use.  With the Deflected Flat Fan and 360o Hollow Circular Pattern, we can direct the spray patterns to better suite your application.  If you require any additional information on these nozzles or any of the other EXAIR Atomizing Nozzles, an Application Engineer will be happy to help you.

John Ball
Application Engineer
Email: johnball@exair.com
Twitter: @EXAIR_jb

 

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

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.

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

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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

 

Compressed Air Uses In Industry

Air Compressor

There are so many uses for compressed air in industry that it would be difficult to list every one of them as the list would be exhaustive.  Some of the uses are the tools used in production lines, assembly & robotic cells, painting, chemical processing, hospitals, construction, woodworking and aerospace.

It is considered as important as water, electricity, petroleum based fuels and often referred to as the fourth utility in industry. The great advantage of compressed air is the high ratio of power to weight or power to volume. In comparison to an electric motor compressed air powered equipment is smoother.  Also compressed air powered equipment generally requires less maintenance, is more reliable and economical than electric motor powered tools.  In addition they are considered on the whole as safer than electric powered devices.

Even amusement parks have used compressed air in some capacity in the operation of thrill rides like roller coasters or to enhance the “wow factor” of certain attractions. Compressed air can be found in your dentist’s office where it is used to operate drills and other equipment. You will find compressed air in the tires on your car, motorcycle and bicycles. Essentially, if you think about it, compressed air is being used nearly everywhere.

Here at EXAIR, we manufacture Intelligent Compressed Air Products to help improve the efficiency in a wide variety of industrial operations. Whether you are looking to coat a surface with an atomized mist of liquid, conserve compressed air use and energy, cool an electrical enclosure, convey parts or bulk material from one location to another or clean a conveyor belt or web, chances are we have a product that will fit your specific need.

Atomizing nozzle
Atomizing Nozzles Can Apply Even Coatings
Super Air Amplifier
Air Amplifiers pull in a large volume of ambient air to increase air flow volume and are great for cooling applications!
Heavy Duty Threaded Line Vac
For conveying heavy or abrasive products the Heavy Duty Threaded Line Vacs have male NPT Threads to make permanent and rigid installation into a piping system a breeze.

If you would like to discuss quiet, efficient compressed air products, I would enjoy hearing from you…give me a call.

Steve Harrison
Application Engineer
Send me an email
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Video Blog: 1/4″ NPT No Drip Atomizing Nozzle Repair Kit Installation

In this video, I will show you how to refurbish a 1/4″ NPT No-Drip Atomizing Nozzles with the RBK20 Rebuild Kit.

If you have any questions, you can contact an Application Engineer at 800-903-9247.

John Ball

Application Engineer
Email: johnball@exair.com
Twitter: @EXAIR_jb

Product Overview: No Drip External Mix Atomizing Spray Nozzles

EXAIR’s Atomizing Nozzles are commonly used to clean, cool or coat parts as well as humidification or to control dust. They are constructed of 303ss, providing superior corrosion resistance and are able to withstand temperature up to 400°F (204°C).

The Atomizing Nozzles are separated into 3 categories – Internal Mix, External Mix and Siphon Fed.

For today’s topic, we will focus on the No Drip External Mix Atomizing Nozzles.

No Drip External Mix Atomizing Nozzles provide the highest flow rates

The External Mix Atomizing Spray Nozzles require a pressurized liquid source and compressed air source to produce a mist of atomized liquid. With the liquid and air being mixed external to the nozzle, they are able to handle higher viscosity fluids above 300 cP.

Our patented No Drip feature positively stops the liquid flow when the supply air pressure drops below 20 PSIG for 1/8″ NPT Nozzles or 30 PSIG for the 1/4″ or 1/2″ NPT. By incorporating this feature into the design, it eliminates the need for any additional valves or supply lines.

Available flow rates range from 2 GPH for our Model # EF9010SS 1/8″ No Drip External Mix Narrow Angle Flat Fan Pattern and up to 303 GPH for the Model # EF6010SS 1/2″ No Drip External Mix Narrow Angle Flat Fan Pattern.

When making a selection, there are 5 common considerations to take into account:

  1. How much liquid flow do I need?
  2. Is the liquid pressurized?
  3. What is the viscosity of the liquid?
  4. How wide of an area needs to be treated?
  5. What type of spray pattern fits the application?

If you have an application requiring a fine mist of atomized liquid or if you’d like to discuss another product or application, contact one of our application engineers for assistance.

Justin Nicholl
Application Engineer
justinnicholl@exair.com
@EXAIR_JN