Model SR2030SS 5.8 GPH 1/4 FNPT No Drip Siphon Fed Round Atomizing Nozzle

1/8 FNPT, 1/4 FNPT and 1/2 FNPT no drip siphon fed round pattern nozzles preserve precious liquids and protect product finished from drips.

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1/8 FNPT, 1/4 FNPT and 1/2 FNPT no drip siphon fed round pattern nozzles preserve precious liquids and protect product finished from drips. They are a good choice where no liquid pressure is available and a thin coating is needed at a specific area. Flow rate is adjustable via the adjusting valve. Siphon nozzles work best with a suction height of 36" (914mm) or less. Since these nozzles are siphon fed, the compressed airflow draws the liquid in and mixes it internally. Liquid flow is dependent both on the gravity or suction height and the airflow. Siphon fed round pattern nozzles provide the most liquid flow of any siphon fed nozzle. Made from 303SS for corrosion resistance. Siphon or gravity fed for non-pressurized applications.


  • 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.

Caution WARNING! Cancer and Reproductive Harm -

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

ModelLiquid PressureAir PressureDroplet Size (μm*)
AN1020SS20PSI40 PSI71
40PSI65 PSI83
ER1020SS5 PSI40 PSI39
20 PSI40 PSI57
SR1020SS4" Siphon Height20 PSI25
4" Siphon Height40 PSI22

*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°
Use our Application Assistance Worksheet to submit information about your application. When you submit this information, we will respond with our recommendation for the EXAIR product best suited for the application. Please complete the Application Assistance Worksheet and click submit or print the completed .pdf file and fax it to us at (513) 671-3363. For immediate help, call our Application Engineering Department at 1 800-903-9247.
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