Filter cartridge for a reversible flow filter

Filter device and method of operating same

Filter element

Filter element for filtering fluids

Filter for filtering solids out of a liquid having a doctor blad

Filter unit for fluids

Filter with axially and rotatably movable wiper

Filter with axially movable wiper

Filter with preferential fluid affinity

Filter with reciprocating cleaner unit

Filter with rotating wiper having indexing blades

Filter with top spray

Filtering and drying apparatus

Filtering apparatus

Filtering apparatus

Filtering apparatus and quick-opening backwash valve therefor

Filtering device

Filtering device

Filtering device with agitator

Filtering scraper