Abstract: A filter for sterile filtration of suspensions, comprising a pressure vessel, at least one candle filter element arranged in the pressure vessel, the at least one filter element having a hollow member with a lower portion which is formed as a filtering medium and an upper portion which is formed as a closed tube with an unwrapped self-supporting filtering medium, and a tube for carrying off a filtrate, the tube being formed as a central tube which is arranged in the hollow member and the filtering medium and is removable so as to permit inspection and cleaning of the filter element without opening the pressure vessel.

Abstract: A back-washable, candle filter element has a center tube with a closed peripheral wall surrounded by a plurality of perforated tubes. A head part has bores and a seat and receives a pressure control arrangement located between the bores. The bores establish a direct link between the top openings of the perforated tubes and the central tube for increasing a filtration power in a controlled manner, and for back-washing and drying a filter cake in a controlled manner.

Abstract: Multichamber-candle filter element for filtration of a residual volume of a suspension with rapidly settling solid components, includes at least two chambers (1,2) positioned in succession above each other, a lowest of the chambers being from 1/3 to 1/10 of a total length of the candle filter element, and a separate filtrate delivery pipe (8,9) extending into each of the chambers to provide a separate filtrate outlet for each chamber and a partition member separating each of the chambers from each other in a fluid-tight manner. The multi-candle filter element also has a fluid-tight cover plate (6) and a fluid-tight bottom plate (3) and fluid permeable walls (14,15).