During water filtration, the water filter retains mechanical impurities as the water flows under pressure through the filter body. The water filter consists of a filter housing and a filter element (not always included).
Flange filters are used for cleaning of non-aggressive liquids supplied to pipes or fittings. The stainless steel filter element is cleaned at zero pressure after unscrewing the lower cap according to the instructions. It is used mainly to catch coarser impurities. With this type of mechanical filters, however, it is not possible to trap dissolved substances, for their possible removal it is possible to use an activated carbon filter, which works on a slightly different principle.