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PortugueseComplete guide of paint guns: types, uses and how to choose the right one for each application
The choice of the right spray gun is crucial for achieving a professional finish, optimizing performance and ensuring efficient work. At Jomar, with more than 50 years of experience and the largest Graco stock in Europe, we offer solutions for all types of applications: from small maintenance jobs to large industrial projects.
In this guide we analyze the main types of guns and their recommended uses so that you can select the most suitable according to your application.
Airless guns: power and performance for high production paint
Airless guns are designed to work with high pressure airless spraying equipment, ensuring superior material transfer and uniform finishes even on large-area surfaces.
Operation
The paint is driven at high speed through a pump, without using compressed air. This allows the paint to be applied quickly and efficiently over large surfaces with uniform spraying.
Common applications
- Plastic paint, enamels, primers.
- Facades and large surfaces.
- New construction works.
- High production projects.
- Professional and industrial applications.
Advantages
- Maximum speed of application.
- Uniform finish without marks.
- Wide range of nozzles to adjust the fan.
Stand out in this category: FTX, Contractor PC, Silver, XTR, among others.
Battery-powered airless guns: total mobility without sacrificing professional finishing
These guns are designed for maintenance work, quick renovations, repainting and applications at height or in spaces without electricity.
Common applications
- Doors, windows, roofs.
- Interior painting or retouching.
- Outdoor work where there is no access to electricity.
- Detailed work.
Advantages
Total freedom of movement.
Immediate start up.
Professional results with less material and time.
Featured models
Graco UltraMax
Graco QuickShot
Powershot (ideal for professionals looking for precision and speed)
Airbrush guns for fine finishes
Airbrush guns are ideal for jobs where surface finishing is critical, such as carpentry, automotive, fine metalwork and lacquering.
Operation
They work by atomizing the paint or ink using compressed air. The paint is placed in a tank or cartridge, and by pressing the trigger, compressed air passes through a nozzle, creating a stream of air that sucks in and pulverizes the paint into fine particles. This allows you to apply fine details and paint in fine particles. This allows you to apply precise details and smooth gradations on different surfaces.
Common applications
Coatings and lacquers
High gloss finishes
Wood and furniture
Automotive sector
Advantages
Superior spray pattern control
Extremely fine finish
Perfect for thin and controlled layers
Available in gravity, suction and pressure versions.
HVLP and Mixed Guns: material savings and fine finishes
HVLP (High Volume Low Pressure) guns reduce rebound and maximize material transfer, making them ideal for varnishes, fine enamels and delicate jobs.
Operation
Combine air and paint in a system that uses pressure to spray paint. The paint is supplied through a tank and the gun mixes the high volume air with the paint in a special nozzle.
Guns for Polyurea and Polyurethane Foam: high pressure for technical materials
Polyurea guns are specifically designed for high viscosity dual-component materials such as polyurea, rigid foam or elastomers.
Operation
These guns work with high-pressure, dual-component systems designed to mix and apply reactive materials such as polyurea and polyurethane foams. Each component (A and ISO/ B and POLIOL) is driven by the machine at very high pressures and travels through separate circuits to reach the gun.
In the mixing chamber, both products are merged by impact (impingement) at high speed, creating a homogeneous mixture that is projected through a specific nozzle according to the desired flow rate and pattern. The chemical reaction takes place in milliseconds, so the gun must ensure a stable flow, perfect sealing and constant internal cleaning to avoid solidification.
These guns allow you to work continuously, with precise control of flow and application pattern, ensuring uniform coating even on large surfaces or complex geometry.
Common applications
Waterproofing of roofs
Industrial coatings
Injection and thermal insulation
Rehabilitation of tanks and structures
Advantages
Control in fast reaction materials
Maximum performance in continuous applications
Robust construction for demanding environments
Available in various configurations for Graco Reactor equipment.
Electrostatic guns: maximum efficiency in industrial paint
The electrostatic guns are ideal for production lines where you need a perfect finish, homogeneous and with the greatest use of paint.
Operation
They charge the paint electrically, which adheres evenly and efficiently to surfaces even in hard-to-reach areas.
Common applications
Industrial metalworking
Metal furniture
Automotive
Machinery
Advantages
Significant paint savings (up to 60%)
Reduction of time and waste
Uniform finish even in complex geometries
Compatible with Ransburg, Devilbiss, Binks and Graco Pro Xpc systems.
Sandblasting and textured guns: extreme performance on demanding surfaces
Sandblasting guns are designed for the spraying of abrasives and dense materials such as mortars, plasters or textured coatings.
Operation
These guns work by spraying a high-speed jet of sand, powder or abrasive material onto a surface. The gun has a tank where the abrasive material is placed and through a nozzle compressed air pushes that material towards the surface to be cleaned, prepared or textured. The process removes rust, old paint or creates texture effects on different surfaces such as wood, metal, concrete or stone.
Sand blasting
Rust and paint removal
Restoration of stone and wood
Industrial cleaning
Preparation of surfaces
Advantages: high abrasion, flow regulation, extreme robustness.
Textured and mortar
Application of plasters
Projection of revocations
Rough or decorative finishes
Advantages: high flow rate, comfortable handling and compatibility with heavy materials.
The right gun can make the difference between a basic finish and a truly professional result. In Jomar we advise each customer according to their sector, material, equipment and type of finish to ensure maximum performance.
If you need help selecting the ideal gun, our technical and sales team is available to guide you and offer you the perfect solution. Contact us and take your work to the next level.
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