EXAIR Corporation’s Research & Development team often finds themselves at odds with our Marketing department, who thinks R&D, through their constant introduction of new ideas & products, is trying to turn our catalog into something resembling a phone book.
I do not believe that is their aim or intention, though (and to be fair, Marketing doesn’t either.) Honestly, we just want to help folks in a wide range of industries solve problems. And a diverse range of engineered compressed air products is our tried-and-true, successful method for doing so.
EXAIR’s Atomizing Spray Nozzles are used to atomize fluids in a wide range of different spray patterns. They utilize a small amount of compressed air which mixes with the liquid supply to create a fine mist of atomized liquid. EXAIR manufactures Atomizing Spray Nozzles in (3) different varieties: Internal Mix, External Mix, and Siphon Fed. For this blog, I’m going to focus on just the External Mix variety.
On all External Mix Atomizing Nozzles the volume of liquid is easily adjusted by adjusting the valve stem on the standard Atomizing Nozzle, or by regulating the liquid pressure (the only option with the No-Drip style). Increasing the liquid pressure will result in an increased liquid flow rate.
The External Mix nozzles have the highest flow rates and can be used with liquids with a viscosity greater than 300 centipoise (cP). Since the air and liquid are mixing just outside of the nozzle, thicker liquids have a lesser chance of clogging in the nozzle. Both the liquid stream and the air stream will come into contact with each other just outside both the air and liquid caps. The compressed air breaks the liquid up into very small particles, allowing you to use much less liquid than a liquid only nozzle.
This makes them very effective in applications that utilize expensive paints, oils, or other liquids. Rather than wasting the expensive materials, the nozzle can be set to precisely dispense only what is necessary to achieve a successful application. The External Mix Atomizing Nozzle is available in the standard configuration as well as the No-Drip style.
The No-Drip Atomizing Nozzle is used in a variety of applications where any liquid dripping from the nozzle after the air supply has shut off would cause a problem. This is common in painting applications where any paint dripping would affect the quality.
The External Mix Atomizing Nozzle is available in (3) different sizes: 1/8” NPT, ¼” NPT, and ½” NPT. If your application could benefit from utilizing the fine atomized spray of liquid look no further than EXAIR’s Atomizing Nozzles. With all sizes and configurations available from stock, we can get one out to you quickly!
Many of us are familiar with what an equalizer (EQ) looks like and what it does. Unfortunately, sometimes they get a bad rap from so-called audiophiles, which in my opinion are defined individuals who spent so much money on their equipment they can’t afford to buy any music to play! Typically, they insist that tone controls must be set to flat because the sound recording engineers mastering the music have already equalized the recording to perfection and if you need to attenuate or cut certain frequencies it is an indicator of poor-quality equipment, and that is simply is not true!
Let’s consider some of the reasons why an equalizer makes sense and, in my opinion, an absolute necessity. The objects and materials in the room will change the sound reproduction characteristics of any speaker system. If you have large floor standing speakers positioned in the corners of the room, sitting directly on wood floors the speakers are now “acoustically coupled” with the floor and the walls. On the other hand, if you move the speakers away from the wall and/or place them on spikes or stands (isolating them for the floor) you would have “acoustically de-coupled” the speakers from the walls and floor, which will reduce the bass or low-frequency loudness. This all affects the perceived loudness and/or quality of the music we want to listen too.
This is where the graphic equalizer shines, no need to move the speakers around or use speaker stands or spikes. An equalizer will allow you to increase or decrease the loudness of multiple frequencies. You can completely customize your sound to suit your tastes, overcome issues with your listening room acoustics, the speakers you are listening with or even anomalies with the music recording.
Like adjusting an equalizer to suit your room acoustics, speaker size and/or speaker frequency response, EXAIR understands that the need for many different options gives you the necessary adjustments for a successful application. A few sizes of Air Nozzle, Air Jet or High Force Air Nozzles will not solve every application with the highest efficiency or effectiveness. EXAIR’s air nozzle variety allows you to produce maximum effectiveness based upon the air pressure and air volume you have available. Whether you need a strong blast or a gentle breeze, if you have tricky mounting positions or remote applications, EXAIR has the largest selection to choose from and solve your production problem.
We clearly state compressed air volume requirements in SCFM (Standard Cubic Feet per Minute) at a given operating pressure in PSI (Pounds per Square Inch), force at 12” from the compressed air outlet and the sound loudness in dBA at 3′ from the nozzle. These details provide the starting point for selecting the best air nozzle.
When you are looking for expert advice on safe, quiet, efficient, and engineered point of use compressed air products give us a call. We would enjoy hearing from you!
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.
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.
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: