PVA Pro Tip #5: Navigating Spray Valve Selection – Frequently Asked Questions
Navigating Spray Valve Selection for Conformal Coatings
Choosing the right spray valve for your conformal coating application is critical for performance, efficiency, and quality. Different materials require different valve types to ensure a consistent and even coating. Below, we answer some frequently asked questions about selecting the appropriate spray valve.
Q: What type of spray valve is generally recommended for 100% solid conformal coatings?
For 100% solid coatings, such as UV cure coatings and higher viscosity silicones, atomized spray valves such as the PVA FCS300 and FCS300-ES series are typically used.
Q: How do atomized spray valves work for these types of coatings?
Atomized spray valves such as the PVA FC100-CFR and FC100-CF function by breaking up the coating material into very small droplets. This allows for the application of a thin and even film of coating at the desired thickness.
Q: What type of spray valve is generally recommended for solvent-based conformal coatings?
For solvent-based coatings, like acrylics and urethanes, an airless film coating valve is often the preferred choice.
Q: What are the benefits of using an airless film coating valve for solvent-based coatings?
Airless film coating valves can provide superior edge definition during the coating process. They can also apply a thicker film of material because much of the solvent content will evaporate as the coating cures.
