Tag: spraying nozzle

Internal Mix Atomizing Spray Nozzles For Maximum Adjustability

Published on by Russ BowmanLeave a comment

It’s not difficult to spray a liquid – oftentimes, you just need to pressurize it and force it out a small(ish) hole, or array of holes, in a nozzle-type device. If your application calls for small droplet size, a consistent & repeatable spray pattern, precise control of the flow rate, pattern size & shape, or the ability to turn the flow on & off, you might be looking for an engineered solution like EXAIR’s Air Atomizing Spray Nozzles.

With 142 distinct models, we can accommodate liquid flow rates as low as 0.14 gallons per hour, to as high as 303 gallons per hour, and patterns as small as 2″ round (at 6″ from the nozzle), and as large as a 13 foot hollow circular pattern.

From Round Patterns (left), to Flat Fan Patterns (middle), to Hollow Circular Patterns (right), EXAIR has Spray Nozzles to suit your liquid spraying needs.

Internal Mix Air Atomizing Spray Nozzles mix the air & liquid internally (just like the name implies), which means that both the air supply pressure, and the liquid supply pressure, will affect the liquid flow rate, and the pattern size. This makes for an incredibly wide range of adjustability. Consider our Model AN1010SS Internal Mix Narrow Angle Round Pattern 1/4 NPT Air Atomizing Spray Nozzle. Let’s say we want to spray about 1-1/2 gallons per hour…that’s about 3 fluid ounces a minute, which is a pretty light mist, comparable to what you might get from a typical trigger spray bottle of kitchen or bath cleaner in your home. We can do that (or thereabouts) at several different combinations of liquid & air supply pressures, highlighted in different colors below:

  • GREEN: With liquid at 10PSI, and air at 10psig, we can spray this amount with a fairly tight 2.3″ to 5″ diameter, when we get 6 – 15″ (respectively) away from the nozzle tip.
  • BLUE: If we wanted to widen that out a bit, increasing to 20PSI liquid & 24psig air, the flowrate increases slightly to 1.7 gph (an extra half ounce a minute) but the diameter of the spray pattern increases to a 2.8″ to 6″ diameter.
  • YELLOW: Increasing the liquid to 30PSI and air to 36psig increases the spray pattern to a 3.0″ to 6.5″ diameter, while keeping the flow rate in the same neighborhood.
  • ORANGE: At 40PSI liquid & 48psig air, we can get a spray pattern diameter of 3.5″ to 6″ diameter.

We can get a 4″ to 7″ diameter with a little more air & liquid pressure, but that starts to increase the flow rate as well. If we want to keep the flow rate lower and still get a larger pattern, we’ll consider Model AW1010SS Internal Mix Wide Angle Round Pattern 1/4 NPT Air Atomizing Spray Nozzle:

  • GREEN: Regulating the liquid to 10PSI and air to 10psig, this Wide Angle Round Pattern model now gives us a 7″ to 14″ round pattern…about three times as big as the AN1010SS under the same conditions, with the same liquid flow rate.
  • BLUE: 20PSI liquid pressure and 20psig air pressure increase the flow pattern to 9″ – 15″ in diameter.
  • YELLOW: At 30PSI liquid pressure and40psig air pressure, we’re going to ‘max out’ with a 10″ – 16″ diameter round pattern. Further increases in either liquid or air supply pressure will increase the liquid flow rate without appreciably changing the pattern size.

EXAIR has a comprehensive line of Spray Nozzles, engineered for efficiency & ease of operation. If you have a liquid spraying application you’d like to discuss, give me a call.

Russ Bowman, CCASS

Application Engineer
Visit us on the Web
Follow me on Twitter
Like us on Facebook

FullStream Liquid Atomizing Nozzles

Published on by Russ BowmanLeave a comment

At EXAIR, we know compressed air, and we’ve been helping customers around the world get the most out of their compressed air systems since 1983. It was only logical that, about ten years ago, we got into using compressed air for liquid atomization.  If you’re looking to spray a liquid in a fine mist with a controllable pattern & flow rate, there are many advantages to using compressed air to atomize it:

  • Adjustability
  • Maximum dispersion
  • Optimal, efficient consumption
  • Small droplet size

Since their introduction, EXAIR has come to offer 142 distinct models of Air Atomizing Spray Nozzles, and, along the way, we leveraged our engineering, machining, and manufacturing prowess to gain position as an industry leader in liquid spraying.  So much so, that, earlier this year, we introduced a spraying product line that doesn’t require compressed air:  the FullStream Cone Liquid Atomizing Nozzles.  Instead of using the energy of compressed air to effect atomization, these use the energy of the liquid’s pressure and flow to change the continuous stream of liquid flow entering the nozzle into a conical spray as it exits to atmospheric pressure.  Here’s how it works:

While Air Atomizing Spray Nozzles maintain their advantage of a smaller droplet size (ours consistently make droplets under 100 microns in size,) there are clear benefits in certain applications to the FullStream Cone Liquid Atomizing Nozzles:

  • Higher liquid flow rates
  • Increased liquid coverage
  • More compact design

These are all important in applications like quenching, cooling, foam breaking, lubricating, degreasing, and sanitizing.  All stainless steel construction means they’ll stand up to a variety of chemicals…both in what’s being sprayed, and in the environment in which they’re installed.

If you have a liquid that needs sprayed, EXAIR has an engineered solution.  Call an EXAIR Application Engineer today to find out more.

Russ Bowman
Application Engineer
EXAIR Corporation
Visit us on the Web
Follow me on Twitter
Like us on Facebook