Sealing and
compliance with the highest standards

HVLP spray guns are ideal for primer and topcoat applications as they minimize overspray and improve transfer efficiency, saving paint and costs. Trans-Tech spray guns (like many DeVilbiss models) provide slightly higher spray speed and power while still meeting transfer efficiency requirements. For best results, professional painters often choose high-performance spray guns like the DeVilbiss DV1 or GTi Pro Lite, specifically designed for automotive primer and topcoat applications.

HVLP (High Volume Low Pressure) spray guns use large volumes of air at low pressure to atomize paint, minimizing overspray and increasing transfer efficiency. They are ideal for achieving smooth paint finishes while reducing material waste. On the other hand, LVLP (Low Volume Low Pressure) spray guns use less air, ideal for paint shops with smaller air compressors. LVLP guns also produce less overspray and can provide better control over detailed painting, although spray speed may be slower than HVLP guns.

The ideal nozzle depends on the type of paint you are spraying.

• For primer, nozzles from 1.2mm to 1.3mm are typically recommended. They provide fine spray atomization, giving even and smooth coverage.
• For topcoat, nozzles with diameters from 1.3mm to 1.4mm are best, allowing for high-quality finishes with proper flow characteristics.
• For undercoat, use larger nozzles, such as 1.7mm to 2.0mm, to handle thicker materials and create even surfaces.

DeVilbiss offers multiple gun tip sizes for most gun types, allowing you to choose according to your material and job requirements. For more detailed information, please refer to these resources at our automotive finishing center.

Regular cleaning after each use is essential. Use appropriate solvents and cleaning tools to remove material residue. Regularly inspect and replace wear parts such as needles, nozzles and air caps to maintain optimal performance and spray quality. Using spray gun cleaning solution or spray gun cleaning kits can make the job faster and easier.

For best results, we recommend using the DeVilbiss DPC (DeKups®) disposable cup system, designed to reduce cleaning time and prevent contamination. DeKups® are compatible with all types of coatings, incorporate mesh filters and have convenient ratio markings for accurate coating measurement.

Tighten the liquid needle tip to 15-20 foot lbs and tighten the liquid needle tip.

You can rotate the air cap 180 degrees and if the heavy pattern changes, the air cap may be dirty or damaged, but if it doesn’t change then the liquid tip may be dirty or damaged.

Current bumper pads are strong enough to abrade most primed bumpers. However, they are not hard enough to level the primer (remove uneven spots) on the bumper.

One can use current bumper pads to clean and degrease primed bumpers. However, they will not effectively level the primed surface and will still need to be sanded.