Bottled drinking water filling machine, its filling method is gravity filling. Gravity filling machine, also known as atmospheric/normal pressure filling machine, means that under atmospheric pressure, it directly relies on the weight of the filling material to flow into the packaging container. This kind of filling Is only suitable for filling liquid with low viscosity and no gas.
Piston Filling Machine Is Usually Used For Oil And Other Liquid With Higher Viscosity Like Salad Dressings, Peanut Butter, Potato Salad. With Glass Bottle, The Cap Could Be Crown Cap, Screw ROPP Cap, Pull-Ring Cap, Or Twist Off Cap.