A valve unit has a plate-shaped valve body with a closure section and a connection section. The valve body has a cutout surrounded by a frame. The closure section has a closure tab that, beginning at a first fastening section at the frame, projects into the cutout. The connection section, beginning at a second fastening section at the frame, projects into the cutout and has a contact tab and a fastening point. The first and second fastening sections are arranged opposite each other at the frame along a longitudinal axis of the valve body. A filter head for the valve unit has a valve seat for a seal body of the closure section of the valve body. A fastening pin of the filter head fastens the connection section of the valve unit. A contact region of the filter head contacts a positioning region of the valve unit.

A modular water filtration system including a filter manifold and a filter cartridge is provided. The filter manifold includes a body, a first arm member, a second arm member, a brace, and a slot positioned on the brace. The filter cartridge includes a cartridge head and a fin member protruding upwardly from the cartridge head, and the fin member is sized to be received within the slot of the filter manifold. The filter cartridge is adapted to engage the filter manifold through a horizontal force when the fin member is aligned with the slot.

The disclosure relates to a filter head comprising a housing having one inlet and at least one outlet for being connected to an on-site water pipe. A filter candle having a filter candle inlet and at least one filter candle outlet can be installed in the filter head, and the filter head has means for setting a desired degree of softening by setting a blend ratio. The filter head comprises a flow meter and at least one conductivity measuring device, in particular a conductivity measuring cell, and the filter head has an interface for data transmission to an external unit and an integrated computing unit.

A filter apparatus includes a filter, such as a cartridge, positioned within a housing. The filter apparatus has multiple ports and valves, so as to allow a user to easily switch between a filtration mode of filtering fluids and a maintenance mode of cleaning the filter. The filter can have a filter substrate in a housing and after filtrate builds up on the substrate, the substrate can be cleaned by directing a spray of fluid, such as from a ring of nozzles at the top of the housing, onto the substrate. A maintenance port can be provided to drain the debris washed from the substrate. The filter can switch between a backwash mode and a filtration mode.

A fuel module for pumping and filtration of a fuel in a fuel system includes a flow housing, and each of an electrically powered pump, a first cartridge filter, and a second cartridge filter in sealed, direct engagement with the flow housing. The fuel module is applied in a low pressure fuel circuit feeding fuel to a high pressure fuel circuit for pressurization to an injection pressure. Electronic closed loop control techniques for the pump are also disclosed.

A filter element having a central axis includes a first endplate having a first central aperture, a second endplate having a second central aperture, a filter material positioned between the first endplate and the second endplate and having an axial passageway extending therebetween and along the central axis, the axial passageway axially aligned with the first central aperture and the second central aperture. The filter element includes a plurality of fingers attached to the first endplate and positioned circumferentially about the central axis and extending parallel therewith, each finger having a lip that extends from a surface of its respective finger for axial engagement with a respective nodule, of a plurality of nodules, of a filter head.

A filter assembly for fluid filtration having a push-activated lock and release mechanism. A push filter design activates a filter key lock upon insertion and extraction, where the filter key may be used simultaneously as a lock and as an identifier for particular filter attributes. The filter housing assembly may be attached to, and removed from, a filter base by a push-actuated release. Upon insertion, the filter key shifts the filter lock longitudinally to receive interlocking segments. Upon extraction, the same axial push shifts the filter lock further to align the interlocking fingers within gaps that allow for easy extraction. The specific key lock design allows a user to identify and match certain filter configurations received by the mechanical support, and reject other filter configurations.

A filter module for a gravity-type water-purifying device including a plurality of plate-shaped filter members, which are in a plate shape having a predetermined area, produce filtered water from raw water introduced from the outside, and are spaced apart from each other in parallel along one direction while one surface of each filter member faces each other at a predetermined; and a filtered-water integrating member for fixing one side of each of the plate-shaped filter members so that the plurality of plate-shaped filter members can be kept spaced apart from each other along one direction while facing each other, and for integrating and discharging the filtered water individually produced from each of the plurality of plate-shaped filter members.

A filter housing assembly for fluid filtration which may be attached to, and removed from, a filter base by a push-actuated release. The filter housing assembly has a top portion with an ingress port and egress port extending therefrom, and a protrusion extending from the filter housing longitudinally axial center. The ingress and egress port are formed in an hourglass shape. A filter key having a base with a groove for mating with said projection, at least one finger extending from said base, and an electronic circuit component housing attached thereto for receiving a printed circuit board, is connected to the filter housing top portion by mating said top portion protrusion with the filter key groove. Both of said ingress and egress port have at least one cavity for the passage of fluid therethrough, where each cavity is exposed in a direction facing away from the printed circuit board.

A connecting structure connects a filter housing to a filter housing retaining structure. The connecting structure conducts a liquid that is to be cleaned to the filter housing and discharges a purified liquid. The connecting structure includes a filter housing cover that connects to the filter housing and that receives a filter medium. The filter housing cover has attachment elements that connect to corresponding attachment elements of the filter housing retaining structure to establish an exchange of fluids between the filter housing retaining structure and the filter housing. Filter housing cover guides are on opposing sides of the filter housing cover; and guides on the filter housing retaining structure engage the filter housing cover guides when connecting the attachment elements of the filter housing cover with the attachment elements of the filter housing retaining structure to support and linearly guide the filter housing cover during the connection process.