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Airless Spray

Last updated: May 15, 2020

What Does Airless Spray Mean?

Airless spray is a painting technique which simplifies the process of painting. This is achieved by using an airless sprayer that pumps the paint under very high pressure, around 3000 psi, via a specialized hose into a small hole in the nozzle of the sprayer.

Airless spraying is often preferred because the end result is a smooth and even finish, which can withstand wear and tear as well as harmful corrosion effects.


Corrosionpedia Explains Airless Spray

In the airless spray technique, spray guns that work under high pressure are used to make atomization of coating possible. This painting system is utilized mainly in heavy duty marine, chemical and industrial linings and coatings. The major advantages include:

  • Better penetration of coating into crevices and pits
  • Even coating, which means fewer coats needed
  • Wet coating, which guarantees excellent flow-out and adhesion

In this system, almost all types of coating can be used using only a small amount of thinner. This shortens the drying time as well as the discharge of solvents to the atmosphere. Different types of tips are available for the spray gun, which allow the application of thicker house paints as well as thinner ones, such as varnish and lacquer. Additionally, airless spray painting allows for more even pressure control and speed, unless the direction is changed.

However, extreme caution should be employed when applying paint through this method, as airless spray guns can predispose an individual to injuries since it uses high pressure.


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CorrosionHigh PressureSurface ModificationCorrosion PreventionEquipmentPaints and Plastics CoatingsApplication Methods General EquipmentCoatings

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