The airless sprayer comes in different types and models, but they are based on the general principle of operation and differ in performance. The application of paint is carried out by pumping liquid through the nozzle of the device. It got its name due to the absence of an air compressor. Among the positive aspects, it is worth noting the fast carrying out of a large amount of work and the high-quality supply of the coloring composition.
Progress of work
To begin with, the surface must be prepared for painting. Those places where paint is undesirable are covered with polyethylene. Clothing and hands must also be protected. The spraying process is characterized by the formation of a cloud of paint, due to which the smallest particles disperse everywhere. To prevent harmful effects on the body, it is necessary to use a respirator, goggles and a specialsuit.
While doing interior work, walls, floors, and other items such as switches, door hinges, and handles need to be protected. If painting is carried out outdoors, it is worth remembering that the paint is quickly carried by the wind and settles on all surfaces within a radius of 7-10 meters.
The Wagner airbrush should be perpendicular to the plane being processed and move in uniform stripes. The ink supply is turned on only after the device starts moving.
The device is thoroughly cleaned after each use, and it is important that cleaning is done before the coloring composition begins to dry. This will provide better performance and longer life.
Features
With inept use, you can accidentally spoil the appearance of objects, so work must be carried out in accordance with all rules.
Also, the matching of paint and solvent is of particular importance, for example, water cannot be used to dilute an oily substance.
The nozzle is small in size, because of which it can often become clogged with grains of dried paint, small debris. If specks get into a jar with a coloring composition, it must be filtered through a sieve made of synthetic material.
The best option is an airless sprayer with a replaceable nozzle, thanks to which you can quickly replace a clogged nozzle and get back to work.
Safety measures
Feedpaint is carried out under high pressure. There is a risk of injury if the device is pointed at any part of the body. At the same time, there may be no noticeable damage on the skin, while the substances have already penetrated into the circulatory system or soft tissues. In any case, you must urgently go to the hospital.
The Wagner spray gun is suitable for almost all types of materials, except for textured ones.
The device may be pressurized even after being disconnected from the power supply. After use is complete, relieve pressure by pointing the nozzle to a safe location while pressing the feed lever or opening the valve.
Pros and cons
The absence of fog is the main advantage of applying airless view technology. It is also worth noting the high performance, which I cannot boast of air and combined methods. In addition, the airless spray gun is characterized by sufficient speed, the ability to use a small amount of diluting compounds, distinctive autonomy, ease of operation and movement, as well as low material consumption.
Despite many advantages, there were some drawbacks, among which the quality of the coating formed by the airless method, which noticeably loses compared to the result obtained using a pneumatic device.
The airless spray gun is not capable of creatingwet film with a thickness within 100 microns, while the equipment is quite expensive.
What you need to know?
The device is designed for both indoor and outdoor use. The best formulations for use are varnishes, polishes and water-based paints, which are characterized by quick drying. Some devices can also act as a duct.
The choice of an airless spray gun is optimal for working with building paints and primers, subject to industrial processing or paint distribution over a wide area to obtain a coating that does not claim to be of high quality. Also, the device is convenient for processing wood material with flame retardants and metal objects with compounds that prevent the development of corrosion.
The tool consists of a handle, a power cord, a spray regulator, a pull fastener, an off button, a replaceable nozzle, a paint container and an electric motor.
How does an airless spray gun work?
The location of the container affects the method of distribution of funds for processing. There are tanks on the body of the device, from which the paint material comes out by gravity due to vacuum, then the plunger pump ensures the paint exits from the device. The airless technique is characterized by a sharp decrease in pressure in the nozzle, that is, the paint is exposed to normal atmospheric conditions after being under pressure inwithin 500 atm. inside the tool. The flow is slowed down by the air, which acts as a drag medium and provides surface coverage.
The high-pressure airless spray gun creates a spray pattern with a sharply demarcated spot area and uniform droplet size. Nozzle settings and its replacement with another option allow you to change the shape of the torch. It is possible to obtain different stripes, dots or spots, as well as change the thickness of the applied coating.
Rules
Compliance with the established rules allows you to achieve the desired result of work and extend the life of the device:
- before starting work, it is mandatory to check the tightness of the tube located in the inlet;
- old paint composition may not have the right consistency, to check this, you need to strain it through a sieve;
- suitable nozzles are used for materials with different thicknesses;
- the use of certain materials is possible only after bringing to the required consistency;
- airless spray gun must be cleaned immediately after each use;
- Lubricant additions require paints containing more than 20% latex by weight;
- nozzles should be systematically checked for damage;
- electrical elements of the device must not come into contact with liquid;
- if long-term storage is planned, the piston and cylinder are lubricated with a special compound.
Air vs Airless Spray Gun: Differences
The method of distribution of the coloring material is the main difference. Air technology ensures that the paint is supplied with a jet of compressed air, rather than a piston element. For this, an external or built-in compressor is used. The first option opens up more possibilities for application, despite the lower mobility of the device. The device fits comfortably in the hand and does not transmit vibrations to it.
Air-based home spray gun delivers higher quality finishes through the use of liquid consistency formulations. It is optimally suited for small surfaces and is indispensable if frequent replacement of the coloring composition is necessary. At the same time, it is worth noting the main drawback, which is the high formation of fog, which contributes to an increase in the consumption of paintwork material.
One of the types of air devices are electric rollers. They differ from spray guns in structural elements and the replacement of the spray part with a roller, which allows you to evenly distribute the paint.
