Filter devices with a flow director surrounded by a filter element providing a large filter surface area and low fluid volumes for efficient filtration and high recovery of sample fluids. The filter device can be configured with dimensions and sealing surfaces to functionally interact as a pre-filter for common usage disposable filter flasks.

Filter devices with a flow director surrounded by a filter element providing a large filter surface area and low fluid volumes for efficient filtration and high recovery of sample fluids. The filter device can be configured with dimensions and sealing surfaces to functionally interact as a pre-filter for common usage disposable filter flasks.

A fuel pump unit includes a suction filter and a fuel pump. The fuel pump includes: a rotatable shaft placed along a rotational axis; a rotor portion that rotates in response to rotation of the rotatable shaft; a suction hole portion, through which the fuel is suctioned into an inside of a rotor receiving chamber; and an outer peripheral wall that surrounds the suction hole portion. The suction filter includes: a filter element that filters the fuel and conducts the filtered fuel into an inside space; and a columnar hole portion having an inner peripheral wall, while the outer peripheral wall and the inner peripheral wall are fitted with each other, so that the columnar hole portion communicates between the inside space and the suction hole portion. The columnar hole portion is placed such that the rotational axis extends on an inner side of the inner peripheral wall.

A fuel pump unit includes a suction filter and a fuel pump. The fuel pump includes: a rotatable shaft placed along a rotational axis; a rotor portion that rotates in response to rotation of the rotatable shaft; a suction hole portion, through which the fuel is suctioned into an inside of a rotor receiving chamber; and an outer peripheral wall that surrounds the suction hole portion. The suction filter includes: a filter element that filters the fuel and conducts the filtered fuel into an inside space; and a columnar hole portion having an inner peripheral wall, while the outer peripheral wall and the inner peripheral wall are fitted with each other, so that the columnar hole portion communicates between the inside space and the suction hole portion. The columnar hole portion is placed such that the rotational axis extends on an inner side of the inner peripheral wall.

A container set including: a filter unit; and a closing unit that is attachable to and detachable from the filter unit. The filter unit includes: a housing having a sample introduction opening provided at one end, and a liquid discharging opening provided at the second end; and a filter fixed to the housing. The housing has a first joining part, and the closing unit has a second joining part configured to be joinable with the first joining part. The first joining part and the second joining part are configured such that the liquid discharging opening is spatially closed in a state in which the two joining parts are joined together. A space between the closing unit and the filter is made into a positive pressure relative to a pressure in the sample holding space by pushing the filter unit and the closing unit such that the distance therebetween is shortened.

A container set including: a filter unit; and a closing unit that is attachable to and detachable from the filter unit. The filter unit includes: a housing having a sample introduction opening provided at one end, and a liquid discharging opening provided at the second end; and a filter fixed to the housing. The housing has a first joining part, and the closing unit has a second joining part configured to be joinable with the first joining part. The first joining part and the second joining part are configured such that the liquid discharging opening is spatially closed in a state in which the two joining parts are joined together. A space between the closing unit and the filter is made into a positive pressure relative to a pressure in the sample holding space by pushing the filter unit and the closing unit such that the distance therebetween is shortened.

A filter device, having a filter housing (2) in which an exchangeable filter element (14) is accommodated, is characterized in that the filter element (14) has a securing device (58) that can be inserted axially into a receiving device (20) of the filter housing (2), in that, after a rotational motion has been performed, snap means (70) are used to snap the securing device (58) to the receiving device (20) in a snap position.

A filter device with a filter housing (2, 6), in which a replaceable filter element (4) is accommodated and which has a cover part (2), wherein the element material (30) is delimited at the end by at least one end cap (32), is characterized in that at least this one end cap (32) of the filter element (4) is placed on a fluid channel (58) and in that a device (84) for transverse force support for the filter element (4) is provided between this one end cap (32) and the fluid channel (58), wherein said device (84) for transverse force support supports the filter element (4) in relation to the fluid channel (58) engaging in the interior of the filter element (4) at least partially at the end.

A filter device having a filter housing (14), consisting of a housing pot (12), which accommodates a replaceable filter element (16) and is closed by a removable lid part (32), wherein the element material (20) of the filter element (16) separates an unfiltrate chamber (22) from a filtrate chamber (18, 43), and having a measurement sensing device (108) for sensing pressure values from at least one of the chambers (18, 22, 43) is disclosed, which is characterized in that the measurement sensing device (108) is disposed on a lid inner side (45) of the lid part (32) and at least partially guided therein, projects into the filter housing (14) and in that at least parts of a measurement value evaluator (78) connected to the measurement sensing device (108) are disposed on the opposite lid outer side (42) facing the environment.

The disclosed technology includes systems and methods for water filtration. In one implementation, a system includes a water receptacle to house unfiltered water, the receptacle including an aperture located in a sidewall, a valve component located on an exterior surface of the sidewall in alignment with a filter housing located on an interior surface of the sidewall filtrate the unfiltered water. In one implementation, a method includes filling a water receptacle with unfiltered water, filtrating the unfiltered water through a filter housing in the water receptacle to obtain filtered water, and moving the filtered water from the filter housing and out of a valve component connected to a first end of a filter housing.