Airless spraying machines are high-performance equipment that is used for paintwork. The principle of operation is based on the crushing of a liquid when it passes through a nozzle. A similar staining method reduces the consumption of materials, if compared with the pneumatic method. This is because the emission of excess paint is reduced.
Airless spraying machines are used in civil and industrial construction. They are intended for applying a huge amount of paints and varnishes, among them:
- alkyd;
- acrylic;
- latex;
- epoxy;
- highly viscous compounds;
- putties.
Application can be carried out by filling the tank with a fireproof coating, anticorrosive agent or textured composition. As an exception, mixtures that contain cement, sand, stone flour and fillers in large quantities among the ingredients are used.
Varieties of devices by type of drive
Airless sprayers can be classified by type of drive, they can have an electric or pneumatic drive. The latter variety is most popular in the industry, when it is necessary to carry out work on woodworking or painting large items.
The advantage of such a drive is expressed in the absence of electrical elements, so you can work in closed rooms, observing the rules of explosion and fire safety.
Description of devices with electric drive
Airless spraying devices can have an electric drive, which provides mobility and small size of the device. Such devices are used for construction and repair work of a large volume, because the operator has the opportunity to connect additional spray guns. On sale you can come across options for high-performance electric drives that are used in civil and industrial construction, for applying acrylic and latex paints, for interior and exterior work, and also for applying putties, plasters, fire-resistant coatings and textured mixtures. The advantage of such a drive are its small size. The disadvantage is the inability to work in explosive and fire hazardous environments.
Devices with a gasoline drive
Airless spraying machines can have a gasoline drive, it is characterized by high power, which reaches 4 liters. from. Such an engine has several advantages, the main of which is autonomy, because painting work can be carried out in a place where there is no way to connect to electricity.
The disadvantage of such spraying apparatus is the need for fuel and exhaust gas. This is true when it comes to work carried out indoors.
Description of the device Graco KA390
On sale you can find the Graco KA390 airless spray gun. This model is suitable for materials with medium viscosity such as enamels, antiseptics and varnishes. Equipment costs 65,000 rubles. The device is powered by AC power, which allows it to be used for repairs and painting work, where there is no main supply of compressed air.
Areas of use are car services, furniture production and metal fabrication. This airless spray high-pressure apparatus is able to work with most paints and varnishes, including:
- epoxy;
- water dispersible;
- alkyd;
- polyurethane.
The device does not imply the need for complex care, and in one day you can use it to do the work of several painters. After purchase, the device is completely ready for work, it is supplemented with a high pressure sleeve, the length of which is 15 m. The kit includes:
- pistol;
- nozzle holder;
- spray nozzle;
- coarse intake filter.
Model Specifications
If you are interested in airless spray painting high-pressure apparatuses, then you should pay attention to the above model. Its maximum working pressure is 227 bar, and the maximum nozzle size is 0.021 inches. In a minute, 1.6 liters of paint will be supplied to the surface. The hose can be raised to a height of 30 m. The equipment weighs 15 kg.
Description of the painting device of the WAGNER Project Pro 119 brand
The Wagner airless sprayer costs 52,900 rubles. This piston type equipment is designed for various paints and can be used for painting and painting surfaces in a country house or apartment. The model is made in Germany and comes with wheels that provide mobility. This addition does not prevent the displacement of the piston pump across the site.
The device has two support brackets, with which you can disassemble it to give a compact size. The design is ergonomic and thought out, because it can be assembled and disassembled in a matter of seconds to move to any place, loading into the trunk of a car. On the body there is a power switch and a valve, which is responsible for switching between painting and flushing modes. On the opposite side is the pressure regulator. On top of the housing is a hole for lubricating the piston pump. On the sides of the frame there are clips for folding it.
Why it is still worth choosing a Wagner model
An additional advantage of the model of the Wagner painting apparatus is the direct intake of the paint material from the tank using a high pressure hose. The material is supplied from the original tank, which facilitates the operation of the pump and does not load the motor, this helps to extend the service life and increase productivity.
The specialist will only have to choose a paint and varnish material, which can be:
- enamel;
- dispersion paint;
- wood impregnation;
- varnish;
- light anticorrosive materials.
It is possible to apply with the help of the unit almost any means based on solvents and water.
Wagner Atomizer Specifications
The engine power of the above equipment is 720 watts, 1.25 liters of paint will be supplied to the surface per minute. The maximum pressure is 200 bar. When working, the nozzle must be removed 25 cm from the surface. The maximum hose length is 15 m. The length of the electric cable is equivalent to 3 m. The nozzle has a diameter of 0.019 inches. The device weighs 18 kg.
Conclusion
The apparatus described above is designed for airless spraying of paints and varnishes, it is an equipment characterized by efficiency and economy. You can use this unit by filling it with a material with a wide range of viscosity.
The principle of operation is that the material is sucked from the tank, and then under pressure is fed into the gun and sprayed using a special nozzle. During the operation of these devices, fogging is minimal, while the treated surface is characterized by high layer quality and perfect smoothness.