A great innovation for the HVLP finisher is the Paint Preparation System. A PPS system makes mixing, cleaning and saving unused coatings easy and efficient. Just line the cup with a disposable liner and attach the cup collar to your spray gun, using the right adapter. When you pull the trigger on your gun, a vacuum will contract the disposable liner to enfold the coating and you will be able to spray at any angle. When you are done, simply release the pressure, and lift out the disposable cup. If you want to save the coating, the PPS system comes with a lid to put on the cup for storage.