The invention relates to a filter device comprising a support structure which extends between a first end and a second end and which defines an interior space tapering from the first end to the second end, wherein the support structure has at the second end a flow body which protrudes into the interior space in the direction of the first end and tapers in the direction of the first end, and wherein the support structure has openings which connect the interior space in a fluidly conducting manner to an environment of the support structure. Furthermore, the filter device has a filter medium which is accommodated in the interior space of the support structure.

A hose line (1) filter screen (12) having a sleeve-shaped hose connector (3) which by way of a first hose connector part-region that is configured as a connector port (4) projects through a hose opening that is provided at an end side (3) of the hose (2) into a contiguous hose end region of the hose (2), and which connector port (4) has a second hose connector part-region (6) which projects beyond the end side (3) of the hose (2), which second hose connector part-region (6) at the free end side thereof has an encircling seal retaining collar (7) that projects on the circumference. An annular flange (8) is provided on the circumference of the second hose connector part-region (6), and a union nut (9) engages behind said annular flange (8). An annular seal (10) is provided between the annular flange (8) and the seal retaining collar. The hose line (1) has a filter screen (12), which at the end side region thereof that faces the hose connector (4) is assembled on the seal retaining collar (7) of the hose connector (4).

A filter container to filter a fluid may include a first section having a porous first wall; a second section having a porous second wall being connected to the porous first wall; and a hose to connect to the first section and to connect to a skimmer to transport the fluid to the filter. The first section and the second section define a central cavity.

A filter assembly for allowing groundwater to flow through a hole in a seawall from a landward side of the seawall to a seaward side of the seawall includes a housing with a flange and a perforated shell. The filter assembly also includes a filter cartridge configured to be removably positioned inside the shell and a face plate positioned over the opening and removably connected to the seaward side of the flange thereby securing the filter cartridge inside the shell. The filter assembly also includes a valve member that is operable in an open state and in a closed state. The filter assembly also includes a deflection device connected to a seaward side of the face plate over the valve member. The deflection device is configured to prevent interference of the valve member.

A pleated media pack includes a section of media configured into a tube defining an interior volume and an open opening at one end. A ratio of the pleat depth to a diameter of the opening is greater than 0.2. At least some of the pleats at one end of the media pack are inverted. In some examples, the pleats include major pleats alternating with minor pleats.

Apparatus to filter liquor includes at least one woven layer. The layer comprises strands that are naturally produced by a living thing, include domains of hydrophilic amino acids, include domains of hydrophobic amino acids, have a triangular cross section to produce turbulent liquid flow, have weft threads parallel to other weft threads, have warp threads parallel to other warp threads at an angle to the weft threads, have at least one of the pair consisting of negatively charged amino acid and positively charged amino acids, and have a denier in the range of 0.75 to 1.25.

A technique facilitates filtration of solids from a well fluid to during a pumping operation. The system may comprise a downhole pump, e.g. a downhole rod lift pump, having a pump housing through which a well fluid is moved during pumping of the well fluid. The pump housing is configured to receive a filter assembly which filters solids from the well fluid during pumping. The filter assembly may comprise a strainer having a filter section and a strainer bushing affixed to the filter section. The filter section may have a plurality of filter holes sized to aid in the filtration of solids. The filter assembly also may comprise a mechanical hold down having an interior sized to receive the filter section. An external bushing is secured to the mechanical hold down in a manner which holds the filter section within the mechanical hold down.

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.

The present invention discloses a rectangular shaped filter and coalescer elements and a vessel that houses a plurality of such rectangular shaped elements. Greater filtration or separation efficiency is provided due to increased number and alignment of rectangular shaped filter elements in the vessel. The rectangular shaped filter elements are also easy to replace.

A device for locking a filter in a conduit for use in heat exchangers is described. The device includes: a main body apt to be associated with the filter and made in two parts, and three locking arms, which branch off from the main body and have each a first longitudinal end which can be tightened within the main body and a second longitudinal end which abuts on the conduit to block the filter. The locking arms are movable with respect to the main body so as to assume a first configuration of minimal encumbrance, in which the insertion of the device in the conduit is allowed, and a second locking configuration, in which the second longitudinal ends are abutted on the walls of the duct. The device allows a removable locking of the filter in the conduit.