This type of filler is perhaps the most widely used machine in small bottle filling operations because it handles a wide range of thin, free flowing liquids as well as liquids with medium viscosity. This machine is also commonly referred to as a "fill to level" bottle filler or cosmetic height filler. This means that machine fills to a target fill height in the container rather than volumetrically. But it can also be shown that as long as the container specification do not vary greatly, the volumetric accuracy of this machine is excellent.
Because this filler operates in a closed loop basis, it is also ideal for handling foamy products. The Examples of products that work well in this filler are bottled water, liquid soap, motor oil, cleansers and even some dairy products. It can be constructed in both chemical duty versions as well as sanitary versions capable of filling pasteurized products at high temperatures.
This machine is relatively low cost and easy to use. However it is generally not useable for products with viscosities greater than 25000 centipose or products that have any particulates exceeding approximately 1/16" diameter.