A batch-type filtering apparatus includes: a first flow path; a second flow path configured to communicate with the first flow path; a third flow path configured to communicate with the first flow path; a fourth flow path configured to communicate with each of the second flow path and the third flow path; an external port configured to communicate with each of the third flow path and the fourth flow path; a first direction switching valve configured to allow at least two from among the first flow path, the second flow path, and the third flow path to communicate with each other; a second direction switching valve configured to allow at least two from among the third flow path, the fourth flow path, and the external port to communicate with each other; and a flow cell.

A water purifier includes a filter head, a flow channel control module, and a filter element. The flow channel control module includes a waterway board and a flow manifold. The waterway board is provided with a water flow channel. The flow manifold is provided with a first passage and a second passage. When the flow manifold is driven by the filter element and rotated relative to the waterway board to a first position where the first passage is connected to the water flow channel, the flow channel control module is switched to a first flow channel waterway mode (or filter mode). When the flow manifold is driven by the filter element and rotated to a second position where the second passage is connected to the water flow channel, the flow channel control module is switched to a second flow channel waterway mode (or replacement mode).

An exchangeable filter of a treatment device has a housing with a housing pot and a housing cover connected to the open side of the housing pot. The exchangeable filter is connectable to a connecting head of the treatment device with a bayonet-type connecting device. The connecting device has a housing connecting part on the housing interacting with a head connecting part of the connecting head for connecting the connecting device. The housing has an inlet for a fluid to be treated connectable to a supply conduit of the treatment head and an outlet for the treated fluid connectable to a discharge conduit of the treatment head. The housing pot has a rim at the open side of the housing pot. The rim radially outwardly surrounds the housing connecting part and axially projects past the housing connecting part in a direction away from the housing bottom.

A water-treatment device (100) comprising a head (2) and a water-treatment cartridge (1) configured for being arranged in the head (20) of the water-treatment device (100), which the device (100) is configured for treating water in the water-treatment cartridge (1). The water-treatment device (100) is characterized in that the device (100) comprises a first element (9A, 9B) of the orienting-ejecting means, arranged on the water-treatment cartridge (1), and a second element (26A, 26B) of the orienting-ejecting means, arranged on the head (20) of the water-treatment device (100), wherein, when the first element (9A, 9B) and the second element (26A, 26B) of the orienting-ejecting means are engaged, the position of the water-treatment cartridge (1) in the head (20) of the water-treatment device (100) is stabilized, when the cartridge (1) is mounted in the head (20) of the device (100), and there is provided ejection of the water-treatment cartridge (1) from the head (20) of the water-treatment device (100) during removal of the cartridge (1) from the device (100) by rotating said cartridge (1) around its longitudinal axis relative to the head (20) of the water-treatment device (100).

A filtration system comprises a housing and a shell housing removably coupled to the housing. A valve comprise a valve housing and a plunger. The plunger comprises a seal member structured to seal an opening in the valve housing. The plunger is axially movable between a closed position, in which the seal member seals the opening, and an open position, in which the seal member does not seal the opening, thereby permitting fluid to flow through the valve housing. A filter element comprises filter media and an endcap. The endcap comprises an alignment tab configured to rotationally secure the filter element with respect to the shell housing when the shell housing is received in the housing. The endcap comprise a valve interaction projection structured to transfer rotation of the filter element and the shell housing to the plunger during installation of the filter element.

A filtration system comprises a housing and a shell housing removably coupled to the housing. A valve comprise a valve housing and a plunger. The plunger comprises a seal member structured to seal an opening in the valve housing. The plunger is axially movable between a closed position, in which the seal member seals the opening, and an open position, in which the seal member does not seal the opening, thereby permitting fluid to flow through the valve housing. A filter element comprises filter media and an endcap. The endcap comprises an alignment tab configured to rotationally secure the filter element with respect to the shell housing when the shell housing is received in the housing. The endcap comprise a valve interaction projection structured to transfer rotation of the filter element and the shell housing to the plunger during installation of the filter element.

A filtering device includes a water pump, a filter cartridge, and a communicating tube for coupling the water pump with the filter cartridge. The filtering device further includes a flow switch attached to the communicating tube and configured to change switching states in response to a water flow rate in the communicating tube being lower than a predetermined value. The filtering device further includes a reminding device operably connected to the water flow switch. The reminding device generates a reminder signal when the state of the water flow indicates that the flow rate of the water in the communicating tube is lower than the predetermined value. The control system includes a control panel for the filtering pump, a central control system, and a filtration detecting system. The control panel is connected to the central control system and the central control system is connected to the filtration detecting system.

An oil filter assembly is disclosed for a machine, such as an internal combustion engine, that has an oil output port and an oil input port. A mounting plate is fixed with an outer enclosure. The mounting plate is further adapted to conduct oil from the machine into a peripheral portion of the outer enclosure, and then returning oil from a central portion of the outer enclosure back to the machine. Oil may pass from the peripheral portion to the central portion through a primary filter having a first porosity. A pressure-actuated valve is fixed fluidly between the portions of the outer enclosure.

An exchangeable filter of a treatment device has a housing with a housing pot and a housing cover connected to the open side of the housing pot. The exchangeable filter is connectable to a connecting head of the treatment device with a bayonet-type connecting device. The connecting device has a housing connecting part on the housing interacting with a head connecting part of the connecting head for connecting the connecting device. The housing has an inlet for a fluid to be treated connectable to a supply conduit of the treatment head and an outlet for the treated fluid connectable to a discharge conduit of the treatment head. The housing pot has a rim at the open side of the housing pot. The rim radially outwardly surrounds the housing connecting part and axially projects past the housing connecting part in a direction away from the housing bottom.

The present invention relates to a system for monitoring fouling issues in a drinking water distribution network, said drinking water distribution network comprising a water mass flow meter having a water inlet and a water outlet, said water mass flow meter being located at a customer, wherein upstream from said water mass flow meter a filter device is positioned, said filter device being provided with a pre-pressure sensor and a post-pressure sensor.