The present invention relates to a suction filter unit (1) for filtering liquids. The filter unit (1) comprises: a housing element (3) with an open first side and an open opposing, second side, the housing element (3) comprising a first set of filter element supporting elements (23); a first cover (5) sealingly connected to the first side of the housing element (3); a second, different cover (7) sealingly connected to the second side of the housing element (3), the second cover (7) comprising a second set of filter element supporting elements (25); a filter unit inlet (9); a filter unit outlet; a first filter element (13) for providing a fine filtering property of the liquid; and a second filter element (21) arranged between the first filter element (13) and the inlet (9) for providing a coarse filtering property of the liquid. The second filter element (21) is clamped between the second cover and the housing element (3) by the first and second set of filter element supporting elements (23, 25).

A tank for storing oil includes a suction strainer with first and second filtration portions. The first filtration portion has a substantially cylindrical shape and formed by bending a thin plate into a pleated shape. The second filtration portion is provided on the outer side of the first filtration portion. The second filtration portion has a substantially cylindrical shape and is formed of a material having a plurality of spaces formed in a surface and interior of the material.

A coalescing filter element provides an integrated filter element with a three stage design with a hydrophobic or hydrophilic coalescing layer. A coalescing filter element comprises: a) At least one particulate filtration layer; b) A coalescing layer promoting coalescing of water particles, wherein the coalescing layer is downstream of the at least one particulate filtration layer relative to the flow of fluid through the element; c) An annular coalescing space downstream of the coalescing layer; d) A sump in a lower portion of the filter element in fluid communication with the annular coalescing space; and e) A hydrophobic layer downstream of the annular coalescing space, wherein fluid being cleaned by the element flows through the hydrophobic layer. The coalescing layer may be a hydrophobic or a hydrophilic coalescing layer. A filter assembly will include the coalescing filter element of the present invention.

Embodiments of a shale shaker filtration system of the present invention generally include a filtration component, a positioning component, and a frame, wherein the filtration component includes at least one screen having one or more layers of a sieving material, the positioning component includes one or more first connecting members and one or more second connecting members, and the frame is sub-divided into a plurality of units having openings; and wherein each positioning component is disposed at least partially within a frame unit opening and is reversibly engaged with the frame via the second connecting member(s), and each filtration component is disposed on top of a positioning component and is reversibly engaged therewith via the first connecting member(s). Embodiments of a method of filtering solid materials from a liquid utilizing embodiments of a shale shaker filtration system of the present invention are also provided.

A filter element has an upstream and downstream side. A filter media assembly of the filter element has an upstream side and a downstream side and has a first filter media layer and a second filter media layer that is adjacent to the first media layer. A substantial portion of the first layer and second layer are uncoupled, and at least one of the first media layer and second media layer comprises binder fiber. The second media layer has a mean flow pore size equal to or smaller than the first media layer. A support layer system is adjacent to the downstream side of the filter media assembly, and a first wire mesh layer is adjacent to the support layer system. At least the first media layer, second media layer, support layer system, and first wire mesh cooperatively define pleats at a pleat packing density of greater than 125%.

A particle separating system for supplying a cam shaft phase adjuster with cleaned lubricating oil. The phase adjuster includes a stator, a rotor connectable to a cam shaft, and a control valve for hydraulically adjusting the rotational angular position of the rotor relative to the stator. The particle separating system includes an oil separator arranged in the flow of the lubricating oil, upstream of an oil gallery of an engine supplied with the lubricating oil, exhibiting a separation efficiency of at least 50% for particles having a size P1 and a separation efficiency of at least 90% at a size P2>P1; a particle separator arranged downstream of the oil separator and upstream of the phase adjuster or control valve, to clean the lubricating oil for the phase adjuster. The particle separator exhibits a separation efficiency of 50% at a size P3, where P1<P3<100 m.

A filter device for transmission oil, having a filter element (24) which can be inserted into a transmission oil pan (70) and the filter medium (32) of which separates an unfiltered side from a filtrate chamber, which is connected in a fluid-conveying manner to an outlet (38, 50, 72), to which a negative-pressure device such as a suction oil pump, can be connected, wherein the filter medium (32) of the filter element (24) has at least one structural layer (46) having a predetermined surface area and predeterminable filter properties and having at least one further structural layer (44, 60) having predeterminable filter properties, wherein the surface area of the further structural layer (44; 60) is different from the surface area of the first structural layer (46), and wherein the respective structural layers (44, 46, 60) encompass an inner filter cavity (30), is characterized in that the respective structural layers (44, 46, 60) are pleated having the same type of pleats, in that the pleated structural layers (44, 46, 60) [extend] in axial alignment between two end caps (22, 34) of the filter element (24), [and in that,] viewed in the flow direction of the fluid flow to be cleaned, the respective structural layers (44, 60) having the higher filtration grade are downstream of an upstream structural layer (46) each having a lower filtration grade.

Filter media, including those suitable for hydraulic applications, and related components, systems, and methods associated therewith are provided. The filter media described herein may include two or more layers, at least one of the layers having a relatively high percentage of microglass fibers. Additionally, the filter media may be designed such that the ratio of average fiber diameters between two layers is relatively small, which can lead to a relatively low resistance ratio between the layers. In some embodiments, at least one layer of the filter media comprises synthetic polymer fibers. Certain filter media described herein may have desirable properties including high dirt holding capacity and a low resistance to fluid flow. The media may be incorporated into a variety of filter element products including hydraulic filters.

A filter assembly includes a housing with an inlet and an outlet. The filter assembly also includes a tubular filter element located downstream of the inlet and upstream of the outlet and a sleeve element surrounding and blocking at least a portion of the filter element.

A filter element has an upstream and downstream side. A filter media assembly of the filter element has an upstream side and a downstream side and has a first filter media layer and a second filter media layer that is adjacent to the first media layer. A substantial portion of the first layer and second layer are uncoupled, and at least one of the first media layer and second media layer comprises binder fiber. The second media layer has a mean flow pore size equal to or smaller than the first media layer. A support layer system is adjacent to the downstream side of the filter media assembly, and a first wire mesh layer is adjacent to the support layer system. At least the first media layer, second media layer, support layer system, and first wire mesh cooperatively define pleats at a pleat packing density of greater than 125%.