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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Engineering Makes The Difference In Spraying Application

The Paint Line Engineering Manager for a major agricultural & industrial equipment manufacturer wanted to improve the efficiency of their paint lines. They had “halo” systems through which large parts passed for primer & paint coatings, which were equipped with inexpensive liquid-only spray nozzles:

Liquid-only spray nozzles lack the control and efficiency of engineered solutions like EXAIR's Atomizing Spray Nozzles
Liquid-only nozzles lack the control and efficiency of engineered solutions like EXAIR’s Atomizing Spray Nozzles

You can get a whole handful of these and it’ll still cost you less than one of our Atomizing Spray Nozzles will.  If you don’t have any particular concerns about efficiency, spray pattern adjustment, droplet size or flow control (and a lot of applications don’t require this, and that’s fine,) then these will work GREAT for you.  And again, they’re abundant and cheap.

That wasn’t the case here – turns out, good quality paint is expensive, and every drop wasted adds up.  Getting a fine, even coating on parts of different sizes & shapes, every time, requires precision control of the flow pattern.  And design of an automated system benefits from a wide selection of options to choose from.

Enter the EXAIR line of Atomizing Spray Nozzles.  With (90) models to choose from, we can cover (literally) darn near any spraying application you can come up with.  If you know what flow rate and/or spray pattern you’re looking for (like a Paint Line Engineering Manager would,) then selection is quick & easy.  Paint consumption is down, quality is up…and the reliability of the new system means they’re spending less time and resources on cleaning & maintenance. For the record, the halo system ended up looking like this:

EXAIR Atomizing Spray Nozzles provide efficient, reliable coating.
EXAIR Atomizing Spray Nozzles provide efficient, reliable coating.

If you’d like to find out more about how engineered products, like EXAIR’s Atomizing Spray Nozzles, can make a difference to your operations…and your bottom line…give me a call.

Russ Bowman
Application Engineer
EXAIR Corporation
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