Atomizing Nozzles

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Atomizing spray nozzles create a fine mist by combining a liquid with compressed air or gas. This process is known as pneumatic atomization and can produce exceptionally fine droplets, sometimes as small as 10 micrometers. They are highly valued for their precise and consistent spray characteristics, making them suitable for a wide range of industrial applications, from coating and humidifying to cooling and lubrication.

Types of atomizing nozzles

The primary distinction in atomizing nozzle design is how the air and liquid are combined.

Internal mix nozzles: The liquid and air are mixed inside the nozzle before exiting through a single orifice.
- Best for: Low-viscosity liquids, like water.
- Characteristics: Creates the finest atomization. However, the air and liquid flow rates are not independent, as a change in one affects the other.
- Not suitable for: Highly viscous liquids (above 200 cP) due to clogging risks.
External mix nozzles: The liquid and air exit the nozzle through separate orifices and mix outside the nozzle.
- Best for: Viscous liquids (above 200 cP), such as oils, glazes, and thick chemicals.
- Characteristics: Allows for independent control of air and liquid flow rates for precise metering.
- Not suitable for: Applications requiring the absolute finest mist, as the atomization is slightly coarser than with internal mix types.

Flow and pattern variations

Nozzles can also be categorized by their feed method and resulting spray pattern.

Pressure-fed: Uses pressurized liquid and air.
Siphon/Gravity-fed: Uses either a siphon effect or gravity to feed the liquid.
Spray patterns: Nozzles come in several patterns to suit specific applications.
- Flat fan: Produces a linear spray pattern, ideal for applications like coating or cooling products on a conveyor belt.
- Full cone: Creates a circular, even spray distribution, used for humidification or gas cooling.
- Hollow cone: Produces a ring-shaped spray pattern, useful for dust control and gas scrubbing.

Common applications

Atomizing spray nozzles are used across numerous industries for a wide variety of tasks.

Food industry: Applying flavorings and coatings, lubricating trays, and humidifying produce aisles.
Pollution control: Gas cooling and scrubbing, and suppressing airborne dust.
Coatings: Applying an even, thin layer of paint, chemicals, or other materials in industrial manufacturing.
Humidification: Providing moisture for greenhouses or protecting sensitive materials from drying out.
Fire suppression: Misting systems for data centers and other sensitive areas where water damage must be minimized.
Lubrication: Applying lubricants to machine parts, even in hard-to-reach areas.

Internal Mix Setups


Full Cone Spray	HollowCone Spray	360 Circular Spray	Flat Spray	Deflected Spray
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External Mix Setups


45° Spray	60° Spray
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Siphon/Gravity Fed Setups


Full Cone Spray	Flat Spray
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