These days Airless paint sprayers are found to be one of the best inventions. The brush and roller can be considered more important. Airless sprayers can be used to apply a wide range of coatings and finishes in much less time than other type of application. In addition you can apply the coating at any thickness that you may desire.
Airless sprayer is a method of painting the house at applying high pressure to atomize the paint. This method generally works by forcing the paint, through a small tip opening at very high pressure. The basic components of the airless paint sprayer are generally a pump, hose, gun and tip. There are two types of pumps available namely the piston and diaphragm. Both of them are supposed to work well. The diaphragm type will not be able to pump the thick materials as easily as a piston pump.
A piston pump consists of a piston, packings, and check valves. When the piston moves up it creates a vacuum to suck up the paint into a chamber, and then push the paint down into a high-pressure hose.
The packings helps to create a seal that prevents pressure losses during the operation. Professional airless sprayers use self-adjusting packings that help to prevent premature wear and the need for repairs.
It is the check valves, or ball and seat valves, that direct the flow of material from the fluid section of the pump to the hose. This helps to prevent the paint from being pumped back through the pick-up tube.
You will find that all piston pumps have all these components in one form or another. A diaphragm pump is a type of pump that also uses a piston, but in a different way. The piston moves the hydraulic fluid to move the diaphragm, which in turn would suck up the paint and then push it through the hose and gun. The movement of the piston and the hydraulic fluid cause the diaphragm to move up and down very quickly.
There seem to be no packings with this type, but check valves are still necessary.
High-pressure hose is a must for this application method. This hose is generally rated for the maximum output pressure of the pump; 3000 psi is supposed to be the typical operating pressure. The attached fittings come as ¼ inch and would work with most of the units. This type of hose is very tough hose which is kink resistant and which is capable of withstanding very high pressure.
