Bag-on valve filling technology is the latest trend of aerosol filling machine techniques. We use a bag-on-valve filling machine to satisfied the specific need to separate aerosol content with propellant gas. This so-called bag-on valve tech helps to make aerosol products purer and safer. This new aerosol filling technique helped us fixed many unusual filling issues. To understand the bag on valve filling process, we'd like to stress the separation of aerosol and propellant through the bag. Bag on valve filling technique usually used for those who have high requirements of environmentally friendly aerosol products and prone to be corrosion products, such as cosmetic products, aerosol food sprayer products, etc.