タイトルまたは説明

Vacuum Filler: With the invention of the vacuum pump the vacuum filler followed shortly after. Simply draw a vacuum on an overflow container and attach hose to a filling head and from the head to the product. Product self primes when the bottle neck is sealed off and product fills to the level of the vacuum return to the overflow.  Basically the bottle becomes a trap for the liquid. Since the invention of plastic bottles vacuum fillers are not common today.  However they are still very effective on glass bottles and are particularly in common use for products like nail polish.