How to choose a spray gun for water based paint

Repair in the apartment is not complete without painting. Most often painted walls and ceilings.
With high ceilings or large areas of color, the process of applying a colorant with rollers or brushes becomes time-consuming and time-consuming.
You can be rescued by a spray gun or paint sprayer.
Coloring the ceiling with a spray gun not only reduces the time of staining, but also allows you to create a high-quality surface.
But it is necessary to be able to choose the right model of paint sprayer.

The main advantages of spray guns for water-based paint

The use of spray guns for water-based paint significantly reduces the time of staining.
The surface to be painted is obtained with a thin, even layer.
No spills or streaks remain on the surface when sprayed.
The minimum thickness of the paint layer significantly reduces the drying time.

The process of coloring surfaces of complex curvature, such as skirting boards, baguettes, is much easier.
The presence of extensions allows the painting of a high ceiling surface from the floor.
Spray guns are equipped with a set of replaceable nozzles. The nozzles are called spray nozzles.

Types of spray guns

Spray guns for water-based paint are divided into three types: manual, electric, pneumatic.
And what is the choice of a spray gun for painting with water-soluble paints?
The difficulty is that low pressure is difficult to achieve fine granular sputtering. The problem is that when using water-based paints in an apartment, drying does not occur as quickly as with solvent paint.
The difficulty of choosing a spray gun is to select a side-by-side between the water diluent and the paint cover .
If you put a nozzle with a larger diameter, it is permissible to use a thicker composition. And if there is not enough pressure, then a large grain will form on the surface or the paint will not go to the atomizer. This is very important especially for electric spray guns.

Manual spray guns

Manual spray guns are devices consisting of a sprayer in the form of a fishing rod, a container, a hose and a pump. Most often, the tank and the pump are integrated into one.
The pump generates excess pressure in a container with water-based paint. Paint under pressure through the hose is fed to the sprayer attached to the end of the fishing rod.
This type of paint sprayers can paint up to 200. .. 250 m² of area per hour of work.
The main advantage of this type of spray guns in their simplicity, low cost, easy maintenance.
Spray guns for water-based paints are excellent helpers when painting ceilings with lime or chalky aqueous solutions of .The drawback of the spray guns of this design is the large graininess of the painted surface. Pros - the ability to pass small particles of the whitewash fraction.
To reduce the grain size, it is recommended to use high quality water-based solutions. Well, do not forget about the viscosity control of the paint used.

By the way, a few words about the viscosity

Viscosity is a scientific term. But in simple language this means how the fluid resists flowing through any hole. The viscosity of the liquid is less, the faster the coloring matter is thrown out through the nozzle of the spray gun. The value of the viscosity affects the grain size of the surface to be treated.
Viscosity is measured in seconds by special instruments called viscosimeters.

From hand spray guns, it is possible to recommend the spray gun KSOM KRDP-4 018-1031.
Working pressure 5 atm.
Tank capacity 2 liters.
Productivity 1.4 l / min.
Weight 5.3 kg

Electric spray guns

Electric spray guns are devices that provide spraying of paint in two ways: airless spraying and spraying due to low pressure.
Structurally electric paint sprayers are made in cases visually reminiscent of a hair dryer, at the end of which there is a spraying unit of a coloring substance, and a container with a paint is attached from below. The devices operate from 220 V AC mains. Their operation does not require additional devices and equipment.
For working at height, it is preferable to use electric spray guns. They are autonomous and easy to work with.
The main disadvantage is that when painting walls it is necessary to dilute acrylic paint with water, reduce its viscosity. At low viscosity, the density of the dye solution decreases and reduces the coverability of the ceiling and wall surfaces. This causes you to apply several layers of paint to the surface.

Airless sprayers work by creating high pressure by the main unit of the device - a plunger pump. In the tank creates an increased pressure and this will ensure the speed of color and high quality of the surface to be painted.

Painting aggregates
Apparatuses are composite devices in which there is a manual spray gun, a pump with a pneumatic drive for supplying a paint solution, heaters, filters connecting hoses, carts.
The cost of airless spray guns lies in the range of 20 thousand rubles.
The best device is the installation of the firm Wagner Paint Crew.

With low-pressure spray guns , an airflow of up to 1 atm is generated by a built-in pump or compressor.
Low-pressure spray gun for painting works from an alternating current network with a voltage of 220 V. The weight of such a device does not exceed 1.3 kg. A low-pressure pneumatic spray gun is completed with a tank of up to 0.6 liters. The cost of this type of spray guns does not exceed 4 thousand rubles.
The best brands of electric spray guns are Wagner, Paint Zoom, Bosh, Balack &Decker, Elmos and others.
The Bosh models are considered to be the best: for example, Bosch PFS 65.
This model includes a paint sprayer, a remote compressor and connecting hoses. A 0.6 liter tank is attached to the spray gun from below.
Compressor power 280 watts.
Productivity of spray gun 130 ml / min.
Cost about 6000 rub.

Widget from SocialMart

Second model of Bosch spray gun PFS 55.
Power consumption 280 W
Capacity of the tank 0,6 l
The tanks are attached below the spray gun.
Weight 1.3 kg
Price 4500 rub

Pneumatic spray guns

Pneumatic spray guns are devices that are sprayed with a colorant in which is carried out by supplying compressed air under high pressure.
Pneumatic spray gun consists of the paint spray gun with paint tank, compressor and connecting hoses.
In pneumatic spray guns, containers for coloring matter can be placed both from below and from above.
The performance of pneumatic spray guns is 400 m² per hour.
Pneumatic spray guns for the technology of supplying a coloring agent are divided into three types:

1. According to HP technology, the paint is sprayed with air under pressure up to 5. .. 7 atm and in a large volume. This is an outdated technology. With this spraying, no more than 50% of the paint gets to the surface. But because of the low cost of spray guns, the technology is still in demand.

2. With HVLP technology, where the paint is carried by air at a pressure of less than 1 atm.and its large expense. This technology increases the transfer of the dye to 70%.Such spray guns cost at least 1500 rubles.

3. By the LVLP technology, in which the paint is supplied by low-pressure air at the minimum flow rate. This technology allows you to transfer up to 90% of the colorant without increasing the speed of work. But the cost of spray guns of this technology can reach 12. .. 15 thousand rubles.

The most common models of pneumatic spray guns are trade marks Sata and Interpool.
The most popular Russian spray gun is the CO-71 sprayer. But the passport does not indicate the possibility of the said sprayer working with water-based paint.

It is best to use a pneumatic spray gun for painting walls and ceilings.

How to choose a spray gun for water based paint?
When choosing the type and model of the sprayer, give preference to spray guns designed for use with water-based paints.

When choosing a sprayer, pay special attention to the material of the enclosure. Preference is given to models with an aluminum body covered with an anticorrosive nickel layer.
But the service life of the plastic case is not great, although its weight is much less.
The nozzle cover must be made of aluminum, brass or stainless steel.
Sealing gaskets must be made of Teflon. This will prevent the seals from corroding solvents.
Paint containers are made of both metal and transparent nylon, which allows you to control the level of paint.
If you are not a professional, it is better to purchase the simplest tool. The simplest paint sprayer costs from 500 rubles. Professional spray guns cost more than 3500 rubles.

Which spray gun is better for painting the ceiling?
You can paint high ceilings either from scaffolding or from the floor.
If you are planning to paint from the floor, it is better to use a hand spray gun in the form of a rod.
And here painting of a ceiling with water-emulsion paint by a spray gun from scaffolding is made by an electric paint sprayer having not only a small weight, but also an opportunity to work autonomously.
The color of the ceiling with a spray gun allows you to get a high-quality surface, a uniform and a thin layer of paint.

Preparation of paint material

Painting starts with the preparation of the color solution. To prepare the water-emulsion solution, water is added to the beauty, the mixture is thoroughly mixed with an electric drill with a nozzle. As a nozzle a whisk or a building mixer is used.
In a thoroughly mixed solution, color is added. Kohler in the solution should be added in small portions, constantly mixing until the elimination of divorce.
Do not forget! Paint should be stockpiled. If you do not have enough paint, then it will be difficult to guess with the new color.

Remember! The paint in a liquid state has a shade that is deeper and brighter than that of a dried one on the surface.

The paint consumption is calculated on the basis that 1 m² of surface will require up to 0.5 liters of a color solution.

How to use the spray gun?

When painting the walls in the apartment, it's necessary to start painting from the corner and continue to the next corner without stopping, so that the shades and shades do not turn out.

• Using a spray gun, keep the jet tilted to the surface to be painted. The jet should be directed strictly perpendicular to the surface of the stain from the distance to the surface not more than 70 cm. The recommended distance is 50 cm.
• The movements of the spray gun must be uniform, circular, spiral. Try to keep a constant pace, do not paint the same areas twice.
• The surface is painted with acrylic and water-based paint in two layers. The second layer is applied after the previous layer has dried completely.

Conclusions:

• purchase paint sprayers, in the passport of which the possibility of working with water-based paints is indicated;
• for work at height, give preference to electric spray guns;
• is more expedient to buy spray guns in an aluminum case;
• for one-time work is better to use a manual cheap spray gun, with large amounts of paintwork without a pneumatic spray can not do.