A cylindrical filter element having a central longitudinal axis and filter media including a plurality of radially extending pleats arranged in a pattern that repeats around the central longitudinal axis. Each of the pleats comprises an inner pleat tip, wherein the inner pleat tips of each pattern define an open area that extends along a height of the filter element, and wherein each pattern of pleats comprises a first series of intermediate pleats that descends in length from a major pleat to a minor pleat and a second series of intermediate pleats that ascends in length from the minor pleat to a major pleat of an adjacent pattern of pleats.

A pool filter core, comprising two portions, a first portion and a second portion, wherein each of the two portions may be halved or truncated cylinders, wherein the portions are configured to engage one another along the vertical edges of the portions, such that when the portions engage one another, an open cylinder is formed that is configured to support a filter substrate and allow for water to flow from outside to inside.

A filter element comprises one or more several tubular filter media element segments, which may be pleated filter media ring segments. One or more heat activated disks are used to connect each tubular filter media element segments together and/or to connect tubular filter media element segments with one or more end cap supports. The heat activated disks are solid in form for assembly with tubular filter media ring segment and then heat activated to bond with tubular filter media ring segments. Multiple end caps can be simultaneously bonded to one or more tubular filter media element segments if a filter stack assembly of component are heated together, such as in an oven. Filter media may also be simultaneously cured. Heat activated disks may be used as pleat stabilizers and/or for and/or as part of end caps.

A liquid filter and a liquid filtration apparatus are provided using the liquid filter, which enable uniform filtration over the entire range, without localizing a part where filtration occurs to the upper side above the middle. The liquid filter has a plurality of spacers fixed to a filter body. The filter body has a liquid inflow space, a plurality of diagonal fold parts individually formed outwards from corner parts of the liquid inflow space and having a length in the radial direction around the center of the liquid inflow space, and pocket parts having any one of the diagonal fold parts as one side, and individually having a triangular planar shape, and the spacers are fixed on the inner face of the filter paper, near the diagonal fold parts, and inside of the individual pocket parts.

A disc segment adapted to be attached to other disc segments to form a disc assembly, the disc segment being in the form of a frame, the frame comprising a left side rail and a right side rail, and a plurality of spaced apart parallel horizontally extending ribs, each disc side including a corrugated wire mesh supported by the frame ribs, the corrugated wire mesh including crisscrossing wire strands, the strands crossing perpendicularly to each other, and the wire strands extend at an angle of 45 degrees relative to its frame rib.

A cylindrical filter element having a central longitudinal axis and filter media including a plurality of radially extending pleats arranged in a pattern that repeats around the central longitudinal axis. Each of the pleats comprises an inner pleat tip, wherein the inner pleat tips of each pattern define an open area that extends along a height of the filter element, and wherein each pattern of pleats comprises a first series of intermediate pleats that descends in length from a major pleat to a minor pleat and a second series of intermediate pleats that ascends in length from the minor pleat to a major pleat of an adjacent pattern of pleats.

The present invention relates to a filtering panel (100) for a disk filter and a disk filter for water purification, comprising a metal filter cloth (16, 116) such as a stainless steel filter cloth, pre-tensioned in both warp and weft directions and fastened to a frame (10, 110) comprising a peripheral portion (11, 111), which is integral with an inner grillwork (12) and which divides the inner area of the peripheral portion (11, 111) into fields (15, 115). The frame (10, 110) comprises a plastic material reinforced with glass fibers or carbon fibres such as polypropylene loaded with fibreglass in an amount of at least 20 weight percent. Each field of the grillwork (12, 112) has an area not exceeding 10% of the inner area of the peripheral portion (11, 111). The pre-tensioning of the filter cloth (16, 116) in both directions is from at least 20% of the yield stress of the cloth (16, 116). Further the present invention relates to a disk filter comprising said filtering panels (100) and method of making said filtering panel (100).

Referring to the figures generally, a rotating filter cartridge includes a first endcap, a second endcap, and a filter media. The filter media is positioned between the first endcap and the second endcap. The filter media creates a mechanical seal between at least one of the first endcap or the second endcap during rotation of the rotating filter cartridge without the use of a potting material. In at least one embodiment, the rotating filter cartridge further includes a body secured to the first endcap and the second endcap. At least one of the first endcap or the second endcap, and the body, may form a pocket that radially pinches the filter media to form the mechanical seal.

Flow control elements (FCEs) and fluid apparatus including the same are described. In embodiments the flow control elements (FCE) include a body that includes a front side, a back side, a left side, and a right side. The body further includes a base region, an upper region, and an intermediate region between the base region and the upper region. The FCE is configured to move in response to a fluid flow (or, more specifically, a pressure differential across the FCE) to regulate a flow of fluid past the FCE. In embodiments the FCE is included in a fluid apparatus for a vehicle, such as but not limited to a suction filter for a vehicle transmission.

A pool filter core, comprising two portions, a first portion and a second portion, wherein each of the two portions may be halved or truncated cylinders, wherein the portions are configured to engage one another along the vertical edges of the portions, such that when the portions engage one another, an open cylinder is formed that is configured to support a filter substrate and allow for water to flow from outside to inside.