Exair Model AN5020SS 231.0 GPH 1/2 FNPT Int Mix Narrow Angle Round Atomizing Nozzle
Exair Model AN5020SS 231.0 GPH 1/2 FNPT Int Mix Narrow Angle Round Atomizing Nozzle

Exair Model AN5020SS 231.0 GPH 1/2 FNPT Int Mix Narrow Angle Round Atomizing Nozzle

Regular price $1,049.60 Sale price$820.00 Save $229.60
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Exair Model AN5020SS 231.0 GPH 1/2 FNPT Int Mix Narrow Angle Round Atomizing Nozzle

EXAIR's 1/8 FNPT, 1/4 FNPT and 1/2 FNPT internal mix narrow angle round pattern nozzles are excellent for spraying a concentrated mist of liquid. Because of the versatility of their adjustments, they can apply a heavy coat up close or send a very fine mist over 30 feet away! They are often used for precision application of lubricants during assembly, or marking items as they move through an assembly line. For pressure fed applications not requiring independent air and liquid control.


  • Washing
  • Rinsing
  • Coating
  • Cooling
  • Quenching
  • Wetting (moistening)
  • Humidification
  • Dust Control


  • Fully adjustable
  • Maximizes liquid dispersion
  • Minimizes liquid consumption
  • All stainless steel construction
  • Compact
  • Versatile
  • Interchangeable liquid and air caps
  • Minimizes air consumption
  • Fine atomization


Atomizing Nozzle Materials

Type 303 Stainless Steel - All of EXAIR's Atomizing Nozzles are constructed with Type 303 stainless steel, which can resist high temperatures and corrosive environments. They are designed for environments with a maximum operating temperature of 800°F (426°C).


Mounting bracket for 1/4 NPT Atomizing NozzlesMounting bracket for 1/2 NPT Atomizing Nozzles

Mounting Brackets - available for 1/8 FNPT, 1/4 FNPT and 1/2 FNPT models. Provides a secure mount for EXAIR's Atomizing Nozzles. Constructed of Type 301 stainless steel.

Atomizing Nozzle Standards and Certifications

CE Compliant

EXAIR Atomizing Nozzles comply with the EU General Product Safety Directive (2001/95/EC) and meet the noise limitation requirements of the EU Machinery Directive (2006/42/EC). All sound level measurements are taken at 3 feet away.

Conflict Mineral Free

Look for this symbol to designate conflict mineral free products throughout our website. EXAIR supports Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act and we are committed to compliance with the conflict minerals rule in order to curb the illicit trade of tin, tantalum, tungsten and gold in the DRC region. EXAIR is using the CMRT 3.02 template to document our supply chain and commitment to conflict free products.


WARNING! Cancer and Reproductive Harm - www.P65Warnings.ca.gov/product


Awards - Internal Mix Atomizing Nozzle

2011 New Equipment Digest King Award Winner

EXAIR's Internal Mix Atomizing Nozzles were a winner of the 2011 New Equipment Digest King Awards. The Internal Mix Atomizing Nozzle family won in the Fluid/Pneumatic Power category.

2011 Plant Engineering Product of the Year Award

EXAIR's Internal Mix Atomizing Nozzles were a finalist in the 2011 Plant Engineering Product of the Year Awards. The Internal Mix Atomizing Nozzle family placed in the Fluid Handling category.

Droplet Size

Droplet size illustration

One of the primary reasons atomizing spray nozzles are used is because of their fine droplet size. Benefits of fine droplet size include even coating and liquid conservation. For reference, a large raindrop is around 6,000 microns (0.236") in diameter. Standard liquid nozzles produce droplet sizes ranging from 4,000 microns (0.157") down to 300 microns (0.012") in diameter. EXAIR's Atomizing Nozzles produce minuscule droplet sizes in the range of 100 microns (0.004") to 20 microns (0.0008")!

Droplet Size

Model Liquid Pressure Air Pressure Droplet Size (μm*)
AN1020SS 20PSI 40 PSI 71
40PSI 65 PSI 83
ER1020SS 5 PSI 40 PSI 39
20 PSI 40 PSI 57
SR1020SS 4" Siphon Height 20 PSI 25
4" Siphon Height 40 PSI 22

*Volume Median Diameter Dv(50.0) of liquid droplets.

1μ = 1 micron = 0.00004".

All tests performed with water.


Spray Angle

Spray angle illustration

The Spray Angle is the trigonometric angle created by the width of the spray pattern and the distance at which it is measured. This angle can vary greatly within a given family of atomizing nozzles depending on flow rates and pressures, but will generally fall into the ranges below:

Spray Angle

Model Family Minimum Angle Maximum Angle
Internal Mix Narrow Angle Round Pattern- AN1010SS, AN2010SS, etc. 20° 45°
Internal Mix Wide Angle Round Pattern- AW1010SS, AW2010SS, etc. 50° 90°
Internal Mix Flat Fan Pattern- AF1010SS, AF2010SS, etc. 50° 120°
External Mix Round Pattern - ER1010SS, ER2010SS, etc. 25° 60°
External Mix Narrow Angle Flat Fan Pattern - EF1010SS, EF2010SS, etc. 35° 70°
External Mix Wide Angle Flat Fan Pattern - EB1010SS, EB2010SS, etc. 50° 105°
Siphon Fed Round Pattern SR1010SS, SR2010SS, etc. 20° 50°
Siphon Fed Flat Fan Pattern SF1010SS, SF2010SS, etc. 50° 100°



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