Air-Assisted Airless Paint Sprayers Working fast with high quality finishing results using air-assisted airless sprayers
Graco air-assisted airless sprayers offer high production levels and an high quality finish.
What is air-assisted airless painting
An Air-assisted airless sprayer uses a pneumatic pump to pressurize paint up to medium pressure (ex. 50/80 bar or more) and sends it to a gun to be atomized at the tip. Adding additional air of max. 2,5 bar improves the atomizing process and therefore the finish. An adapted compressor is generating the air that is needed.
Air-assisted airless solves many problems with the use of high-viscosity and high-solids coatings, and issues associated with heating and using higher fluid pressures for the atomization of viscous materials. Many waterborne materials require the higher fluid pressure of air-assisted airless because the lower pressure and the air-assist create finer atomization for a finer finish than airless.
Advantages of air-assisted airless spraying
- More pressure, you can work much faster.
- Is used there where normally an airless unit is used but because of very high finishing quality demands, an air-assisted unit has to be used. It combines the advantage of an airless unit and an air-spray unit, so that you can work fast and have a high finish quality.
- Used for lacquers, varnish, stains
- Less over-spray
Selecting an air-assisted paint spraymachine
There are many factors to take into consideration when choosing the correct airless sprayer for an application:
- Material and surface to be sprayed: The types of materials you spray will determine the size of the tips you use. If you plan to spray a variety of materials you have to consider buying a sprayer with greater versatility. Will you be spraying on dry wall, exteriors or concrete? You have to consider the tip sizes needed as well as the quality of finish required in order to choose the best sprayer for the job.
- Liters per week to be sprayed: Purchasing a part-time sprayer to do a full-time job has disappointed many contractors. In the long run, saving money on a sprayer that is inadequate for the job, or not durable enough, will cost a lot in lost labour.
- Number of spray guns to be used at one time: If you plan to use more than one gun at the same time, then you have to purchase a unit that has the ability to handle multiple guns.
- Hose lengths necessary: Hose length depends on the job site, material being sprayed, tip size, and hose diameter. Your sprayer must be able to support the length of the hose. Most Graco sprayers use DC motors, which are able to support longer hose lengths than either AC or universal motors.
- Available budget: Buying a sprayer is an investment. You don’t want to over-buy or under-buy. Keep in mind the cliché, “You can pay now or later”. Downtime resulting from an undersized, overworked sprayer or poor quality equipment can quickly wipe out any savings from the initial low purchase cost of the sprayer.