Fuji Spray does not recommend using a single gun to spray both water-based and solvent-based products as it can cause problems.
Although Fuji recommends any of its guns for any type of finishing product, it is recommended to have two different guns if you need to regularly switch between product bases to spray.
If you need to use a different base with your single gun, make sure to clean the gun thoroughly with the appropriate solvent for the product used. Once the cleaning is complete, perform an additional cleaning with acetone to ensure that your gun is completely clean and ready to return to your regular base.