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Selecting an atomizing nozzle may seem like a complex operation, with many factors to consider. We’ve created a chart to guide you step-by-step in choosing an atomizing nozzle.
Below are the technical characteristics of atomizing nozzles to help and support you in your selection. We are at your disposal to provide you with individual advice and to help you find the nozzle that suits your needs.

What is an atomizing nozzle?

An atomizing nozzle is a spray device that produces extremely fine droplets. The term “atomization” itself refers to the separation of volumes of liquid, resulting in a dispersion (more or less) of liquid particles (drops). When we talk about atomization, we usually mean the deep breakdown of the liquid (down to the atomic level).
A device for atomizing a liquid (that is, breaking it up into extremely fine droplets) is called an “atomizing nozzle”.

Definition of hydraulic atomizing nozzle

A hydraulic atomizing nozzle is a device capable of atomizing a liquid at low pressure without gas assistance.

Definition of pneumatic atomizing nozzle

A pneumatic atomizing nozzle is a device that atomizes a liquid through a gas.
The process of atomizing a liquid using a compressible fluid such as air, vapor, or gas is called two-phase, two-fluid, or pneumatic atomization.

How a pneumatic nebulizer works

Mounting can be designed in two different ways to achieve the following actions:
Air and liquid mix in a mixing chamber inside the nozzle and are ejected from the orifice as a spray.
Air and liquid are ejected from the nozzle through different orifices, and the spray is produced by the impact of two jets.
In an external mixing setup, the two fluids are ejected through different orifices and mixed outside the nozzle, so that the pressure values can be adjusted independently and their flow rates can be easily controlled. External mixing can be used to atomize viscous liquids or liquids containing suspended solids. External mixing units are only built in the pressure type and can only produce flat jets.

In the internal mix settings.Atomizing nozzle units are designed so that the two fluids are mixed internally and the resulting atomized stream is ejected through the orifice or orifices of the nozzle. In this group of nebulizers, a change in the flow rate or pressure value of one fluid causes a change in the flow rate of the other fluid, resulting in the formation of finer droplets, and vice versa.

Steps for Selecting Atomizing Nozzles

We define our resources: compressed air and pumps.

STEP 2 | 3
If compressed air is not available, we choose hydraulic atomizing nozzles;
If there is a hydraulic pump, continue to step 4; if not, determine how to supply fluid to the system: by gravity or suction;

Determine available air performance: flow and system air pressure.

Determine the nozzle performance you are looking for: distribution, flow and spray angle.

Choose between internal and external mixing: If the liquid has a high viscosity, external mixing is recommended. On the contrary, if the viscosity is normal, it is recommended to choose internal mixing.

Identify controls and accessories for atomizing nozzles.

If you need to know more about atomizing nozzles, please visit our company’s official website and our team of expert engineers are always on hand to provide you with more advice and assistance to help you find the nozzle that best suits your needs.

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