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Explore and compare the BlastOne line of top industrial spray guns including Tritech, Binks, DeVilbiss, and Graco. Whether you are needing an airless or conventional spray gun, BlastOne offers something for project and within your price range.
Should you have a specific question or need advice, please don’t hesitate to reach out to our customer service.
Explore the various spray atomization technologies used in industrial coating applications, including Conventional, HVLP (High Volume Low Pressure), LVMP (Low Volume Medium Pressure), Air Assisted Airless, and Airless. Each method offers unique operating parameters suitable for different coating requirements.
The Conventional atomization method, a long-standing industry standard, utilizes high-velocity air jets to achieve high atomization power. This process is ideal for breaking down high solids and high viscosity coatings. Air pressure exiting the air cap typically ranges from 40-70 psi (2 to 5 bar), with an air consumption rate of 6 to 25 cfm (170 to 700 l/min).
HVLP atomization uses increased air volume (11 to 30 cfm or 300 to 840 l/min) at a low pressure (psi) to atomize coatings effectively. This method ensures high transfer efficiency and complies with Government Environmental Legislation, limiting the air cap atomizing pressure to a maximum of 10 psi (0.7 bar).
LVMP atomization offers an energy-efficient alternative to HVLP, delivering comparable transfer efficiencies. The air cap pressure typically ranges between 20 to 45 psi (1.3 to 3 bar), with air consumption of 9 to 20 cfm (250 to 560 l/min), making it ideal for various coating applications.
Combining the strengths of air spray and airless methods, Air Assisted Airless atomization offers high-efficiency coating with reduced fogging and bounce-back. Operating at fluid pressures between 500 and 2,500 psi, this technology allows for precise control of spray patterns, eliminating “tails” and ensuring consistent film builds, especially in intricate shapes.
Airless atomization propels fluid through an orifice at high pressure (typically 3,000 – 7,000 psi), generating a spray pattern determined by the orifice shape. Although it produces larger atomized particles, making it less suitable for fine finishes, this method is effective for large-scale applications where high-speed coating is essential.
Pressure-feed systems utilize an external pressure source, such as a pressure tank, piston pump, or diaphragm pump, to deliver fluid to the spray gun nozzle. The air and fluid mix outside the nozzle to atomize the coating.
Advantages: Capable of delivering higher volumes of fluid, this method is versatile, spraying a wide range of materials. It also offers independent control of fluid and air pressure, ideal for varied application needs.
In gravity-feed spray guns, the fluid cup is positioned above the gun, allowing gravity to naturally push the fluid into the spray gun.
Advantages: This system is perfect for quick color changes and small-scale jobs. It reduces waste by utilizing the entire coating material.
Siphon-feed systems employ vacuum-created air at the nozzle to draw fluid from a cup below the spray gun.
Advantages: Commonly used for traditional or classic materials, this method is effective for larger quantities of fluid, making it suitable for extensive coating projects.
Spray guns are a complex assembly of parts and need to be handled with care. Added to this is the fact that many coatings are very aggressive on hoses pumps and guns. Shut down procedures must always include clean and flushing. Coating left inside the gun will set, rendering it useless. Air spray guns require regular lubrication to keep the moving parts moving. Equipment rebuilds are best carried out in a workshop, a gun rebuild performed on the back of a pick-up risks dropping that vital spring into the dirt. Using a spry gun also carries with it a risk of injection hazards. An injection hazard is where a spray coating system component fails and pant and solvent are injected into the operators body tissue and bloodstream. This is a greater risk with the higher pressures involved in airless spraying. Injection injuries can necessitate the need of amputation (paint or solvent injection acts very quickly and the damage is irreversible) of the affected part of the body or even death of the victim. To protect against this, keep your maintenance up to date – bulging lines need replacing immediately, leaking components need investigation.
The prime question to be asked when choosing a spray gun is “what is required to atomize the coating?” The whole purpose of a spray gun is to convert a stream of liquid into millions of little drops of material. Incorrectly atomized coating is a fail.
The second question is “what volume of coating do I want to apply?” Generally speaking, airless spray systems provide higher volumes of application.
The third question is “what finish do I require?” If a glossy automotive type finish is required, an air-spray gun will provide this best.
If using an air-spray gun, high wear and tungsten carbide components are available to provide extra life for the parts most subject to wear when spraying abrasive coatings. Airless spray guns can cope with the abrasiveness of most industrial coatings.
Unfortunately no. You have correctly chosen using an air-spray gun to apply the zinc primer (the solids in a zinc coating tends to “pack out” in an airless spray system), however there is an extra component required for coating success with zinc primers – an agitator. This is mounted in the paint pail if using a Warrior Spray Pump or attached to the pressure pot and keeps the zinc in suspension in the liquid component of the coating.
While the flow in a spray system is dependent on pump pressure (airless) or compressed pressure (air spray), the pointy end of the system has an influence as well. For an air spray gun, fluid nozzles are commonly available in sizes from 0.0555″ to 0.110″. For airless guns, spray tips are commonly available from 0.007″ to 0.081″.
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