LVLP Spray Gun Setup Guide for Car Refinishing: From Preparation to Final Spray

Proper setup is the foundation of high-quality automotive refinishing. Even the best LVLP spray gun cannot deliver optimal results without correct preparation and adjustment. From initial setup to final spraying, every step influences finish quality, efficiency, and consistency when painting vehicles.

Preparing the LVLP Spray Gun Before Painting

Before starting any car refinishing job, preparation is critical. Begin by ensuring the spray gun is clean and free of dried paint residue. Check that all components, including the air cap, fluid nozzle, and needle, are properly installed and tightened.

Select the correct nozzle size based on the coating material. A 1.3mm nozzle is ideal for base coats and clear coats, while a 1.4mm nozzle is better suited for primers, sealers, and thicker paints. Using the correct configuration allows the LVLP spray gun to deliver stable atomization and predictable material flow.

Adjusting Air Pressure and Fluid Control

LVLP systems are designed to operate efficiently at lower air pressure. Set inlet pressure according to manufacturer recommendations and fine-tune it based on spray pattern testing. Proper fluid control adjustment ensures consistent coverage without excessive buildup.

Balancing air and fluid flow is essential for achieving smooth results with a paint sprayer.

Setting the Spray Pattern

Fan pattern adjustment plays a key role in coverage uniformity. Test the spray pattern on a sample panel before applying paint to the vehicle. A correctly adjusted LVLP spray gun produces an even fan pattern with uniform paint distribution.

Proper Spraying Technique for Car Refinishing

Maintain a consistent spray distance and move the gun parallel to the surface. Overlap each pass by approximately 60 to 70 percent to ensure even film thickness. Controlled movements reduce defects and improve finish quality.

Final Checks and Between-Coat Adjustments

Between coats, inspect the surface and make minor adjustments to air pressure or fluid flow as needed. Keeping the spray gun clean between stages helps maintain consistent performance throughout the refinishing process.

Conclusion

By following proper setup and adjustment procedures, automotive painters can fully utilize the advantages of an LVLP spray gun and achieve reliable, professional-quality car refinishing results.