An apparatus for filtering solid and/or non-dissolved contaminants entrained in flowing water, the apparatus comprising an inlet for the water containing the entrained solid or non-dissolved contaminants to flow into a filtering chamber; a first outlet for expelling the unfiltered water from the filtering chamber; the filtering chamber further comprising: a curved or corner portion in the filtering chamber providing at least a part of a flow path of water from the inlet to the first outlet such that flow of the water along the curved or corner portion changes the direction of flow of the water; and a filtering screen for filtration of solid and/or non-dissolved contaminants from the influent water thereby allowing passage of filtered water out of the filtering chamber.

Membrane cell stack arrangement and method of manufacturing such a membrane cell stack arrangement. The arrangement has a housing (2) having a central axis, and a stack of membrane cells (4), each membrane cell (6) being arranged inside the housing (2) with a major surface (6a) of the membrane cell (6) oriented substantially perpendicular to the central axis. Each membrane cell (6) has a corner recess (12) between each two adjacent sides of at least four sides (10a-d). Sealing compartments (14) are provided by corner recesses (12) of adjacent membrane cells of the stack of membrane cells (4) in co-operation with a part of an inner surface (2a) of the housing (2).

A suction filter which filters fuel inside a fuel tank of a vehicle to let a fuel pump draw filtered fuel into an inlet port includes a filter element disposed inside the fuel tank and filtering stored fuel stored in the fuel tank by allowing the stored fuel to pass through to an inner space, and a partition wall element disposed in a posture with which to divide the inner space to a first space where filtered fuel filtered at the filter element flows in and a second space where the inlet port into which the filtered fuel is drawn opens, and allowing the filtered fuel in the first space to pass through to the second space. The partition wall element is provided in a form of a partition film dividing the inner space to the first space on an upper side and the second space on a lower side.

A filter element is provided with a support frame provided with a first end disk section and a second end disk section. A folded filter medium is connected to the support frame and arranged between the first end disk section and the second end disk section of the support frame. The first end disk section or the second end disk section has a face facing away from the filter medium. The support frame is provided with a fluid guiding channel that guides, when a fluid flow passes through the filter medium, the fluid along the face facing away from the filter medium. A filter assembly with such a filter element and a filter receptacle in which the filter element is exchangeably arranged is provided.

A filter element has a mat-type or sheet-type filter web (3) forming by its outside (5) at least in part a filter jacket (7). Along the outside (5) of the filter jacket (7), a surface configuration or modification takes place with structures (11) being delimited from the remaining surface (9) of the filter web (3), being joined to the filter jacket (7) and being of presettable contour and/or thickness. The structures (11) are generated by spray-fiber application and shaping, in such a manner that in time sequence, first the structures (11) and then the filter jacket (7), or in reverse order in time sequence, first the filter jacket (7) and then the structures (11), or that simultaneously both the filter jacket (7) and the structures (11) are formed in negative or positive shape on the filter jacket (7). The production of the filter element and a shaping device used in this production process are disclosed.

A filter element includes at least first and second opposing pleated media sections and at least first and second support structures supporting, absent an inner liner, the at least first and second media sections and being layered between the at least first and second media sections. In another embodiment, the filter element includes a continuous construction of pleated media forming the first and second opposing pleated media sections, in which the pleats have portions of differing lengths, and a support structure within the interior volume supporting the first and second media sections. The filter element can be in the form of two racetracks, a V-pack, or two V-packs. The racetracks can be polygon shaped.

An exemplary water circulation pump pre-filter unit (PFU) comprises a backwash pipe in fluid communication with an outer nozzle outside a screen cage and an inner nozzle within the screen cage. The PFU may simultaneously spray inside and outside the screen cage using an inner nozzle and an outer nozzle configured with an axial jet perpendicular to a plurality of radial jets. The inner nozzle may have a restriction chamber with diameter decreasing in flow direction to a full cone nozzle outlet, concentrating dual streams from a plurality of inlets swirled through a plurality of helical channels. Pairs of inner nozzles may be angled to each other, increasing the inner surface area cleaned. Exemplary implementations may simultaneously clean the screen cage bottom and top using the outer nozzle and inner nozzles in backwash mode and in a separate pre-filter mode ingest water through multiple filter pipe inlet apertures.

A water inlet protection system is provided. The system may an adjustable frame defining an interior cavity, the adjustable frame including a plurality of rigid base members, a plurality of slidable corner members, a plurality of nut-and-bolt fasteners, and one or more tabs extending from one or more of the corner members. Each of the slidable corner members includes one or more slots, and each of the nut-and-bolt fasteners includes a bolt that extends through one of the one or more slots and one of the rigid base members. When the respective bolt is loosened, the respective slidable corner member is slidable along the respective slot atop the respective rigid base member, thereby altering a boundary of the interior cavity. When the respective bolt is tightened, the respective slidable corner member is fixed in place atop the respective rigid base member, thereby fixing the boundary of the interior cavity.

A portable water-filtering and storage dispenser is provided with twin orifices at top and bottom, the top orifice for dispensing water to a user for consumption, the bottom orifice for receiving water for filtration and storage. Water received via the bottom orifice is filtered by a dome filter and keyway insert. Both orifices are sealable with detachable caps for threadably mating with the body of the dispenser.

A disc filter sector comprising a trapezium tubular support frame, and a trapezium screen frame supporting a screen doth, the trapezium filter medium dement being connected to the trapezium tubular support structure. More particularly, there is a pair of such filter sectors, and the sectors are connected together by an overlying cap.