General characteristics

The air atomizing nozzles mix compressed air (or other gas) with the liquid to spray to create the finest atomization.
The droplet dimension may change from 10/15 micron to 300/400 micron according to the size of nozzles and to the pressure of liquid or air.

These nozzles can be used in many different applications:

Every type of lubrication
Spray Coating
Air conditioning
Dust control

The different type of design, material, connection, spray pattern, functions (with liquid under pressure or siphon feed) meet every requirement.

Spray regulation
It is possible to regulate the inlet liquid pressure and the mixing air in order to have the spray desired. When the air pressure increases the droplet dimension becomes smaller down to a few microns reducing the flow of the liquid.
In reverse, if the liquid pressure is higher than the air the droplets become bigger and increase the liquid flow.
So if we change the pressure we change also the flow, the droplet dimension, the spray angle (by specific limits), the spray length.

The same atomizing body can accommodate different types of liquid nozzle assemblies in order to obtain:
E full cone under pressure
E wide round cone under pressure
E flat spray under pressure
Deflected jet

Typologies of exercise
The liquid can be fed to the nozzles in 3 ways:

1) Pressure

The liquid is fed to the nozzle under pressure

2) Siphon

The liquid feed uses a Venturi’s action generating by the liquid tank position in the liquid-air nozzle chamber
3) Gravity

The liquid is fed to the nozzle by gravity

1 Sphere valve - 2 Air regulator and gauge - 3 Liquid regulator and gauge - 4 Air filter - 5 Liquid filter

Mixing typologies

Internal mixing
The liquid is combined with the air inside the nozzle to produce a perfect spray atomization.
The air and liquid pressures are directly related to each other and influence the spray type.

Many choices of spray are available:
Full cone
Hollow cone
Flat jet
Deflected jet

The feed is by pressure, by gravity or by Venturi’s effect.

Outside mixing
The air-liquid mixes outside the nozzle.
The air and liquid pressure are not so directly related as those in the internal mixing nozzle.
This type of nozzle is suitable in application with high viscous fluid, thick fluid, or with very small solid particles.

The spray type available is:
Flat jet

The feed liquid must be under pressure.

The air atomizing nozzles can be:

Air atomizing nozzles
Automatic spray guns

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