A filter system is provided with a housing provided with a cover. The housing has a raw liquid inlet, a clean liquid outlet, and a liquid drain. A filter element is provided that separates a raw side from a clean side. A slide valve with a valve rod and a sealing head is provided, wherein the sealing head is arranged such that the liquid drain of the housing is closable but openable. A coupling is arranged between the sealing head and the valve rod, providing an axial securing action of the valve rod at the sealing head and a radial securing action, separate from the axial securing action, of the valve rod at the sealing head. A slide valve for such a filter system as well as a sealing head and a valve rod for such a slide valve are provided.

A filter assembly including a filter housing having a longitudinal axis, the filter housing divided into a first filter chamber and a second filter chamber. The filter assembly further includes a first filter element and a second filter element. The first filter element includes a first element top endplate, a first element bottom endplate, and a first filter media positioned between the first element top endplate and the first element bottom endplate. The second filter element includes a second element top endplate, a second element bottom endplate, and a second filter media positioned between the second element top endplate and the second element bottom endplate. The filter assembly further includes a solid tube positioned between the first element top endplate and the second element bottom endplate.

The invention relates to a filter with a gasket applied in line shape at an edge of the filter. The invention suggests to apply the gasket with a nozzle which facilitates a gasket that is thinner and/or whose protrusion beyond the filter is lower than this would be feasible for example through injection molding.

An oil filter element has first and second end disks between which an annular filter medium is held. The oil to be filtered flows through the filter medium in a direction radial to the longitudinal axis of the oil filter element. The oil filter element has a central channel arranged on the clean side and provided with a central outlet opening in the region of the first end disk. A radial sealing element, formed by an elastically deformable inside circumferential section of the first end disk, is arranged in the region of the outlet opening. In addition, an axial sealing element is arranged on the outside of the first end disk. This axial sealing element is held on the first end disk by retaining elements. An oil filter having such an oil filter element is provided.

A filter arrangement for threadably securing to a filter head includes a housing having a surrounding wall defining an interior volume, an open mouth providing access to the interior volume and an end opposite of the open mouth. The surrounding wall has an exterior and an interior. A filter media construction is operably held within the interior volume. A sleeve, distinct from the housing, is secured to the exterior of the surrounding wall adjacent to the housing mouth and extending partially along the surrounding wall. The sleeve has an exterior and an interior. The exterior of the sleeve defines mounting threads constructed and arranged to removably mount with the filter head, when the filter arrangement is secured to the filter head. The interior of the sleeve is against the exterior of the surrounding wall. A first seal member is oriented against the sleeve to create a seal with a filter head, when the filter arrangement is secured to the filter head. A filter assembly includes a filter arrangement and a filter head. The filter arrangement is removably secured to the filter head by a threaded connection between the sleeve and the filter head. A system includes an engine utilizing a liquid and a filter assembly in fluid communication with the engine to filter the liquid. Methods of making filter arrangements include utilizing structures characterized above.

An apparatus and a method are provided for a high capacity oil filter configured to remove contaminants from engine oil flowing within an internal combustion engine. The oil filter comprises a hollow canister having a length and a diameter suitable for housing a large filtration medium. A base gasket forms a fluid-tight seal between the oil filter and the engine. A base plate circulates oil from the engine through the oil filter. An anti-drainback valve prevents oil from draining out of the filter and passages within the engine when the engine is not operating. A key aspect of the present disclosure is that the relatively large dimensions and the configuration of the filtration media provide a large surface area for entrapping contaminants flowing with the engine oil.

A filter assembly has a threaded cover that mates with a complementary thread on the filter housing. Rotation of the housing cover in a first direction moves the cover axially away from the housing, and rotation of the housing cover in a second direction opposite the first direction moves the cover axially toward the housing. An intermittent coupling between a filter housing cover and a filter element applies intermittent axial forces to the filter element as the housing cover is rotated in the first direction to separate the filter element from the housing along with the cover. The intermittent coupling includes components on the inside of the filter cover that engage with complementary components on the filter element during each revolution of the cover.

An apparatus is disclosed. The apparatus includes a seal having an annular body including an upper surface and a lower surface. The annular body also includes an outer side surface and an inner side surface that join the upper surface to the lower surface. The inner side surface contributes to defining an endcap-engaging surface of the seal including: a first endcap surface engaging portion that is sized for engaging a portion of an upper surface of an endcap, a second endcap surface engaging portion that is sized for engaging an outer side surface of the endcap, and a third endcap surface engaging portion that is sized for engaging a lower surface of the endcap. The annular body includes an upper portion connected to a lower portion. The upper portion of the annular body of the seal is defined by a rounded seal portion. The lower portion of the annular body of the seal is defined by a flexible tang portion and a flexible leg portion. The flexible leg portion is connected to and extends away from the rounded seal portion. The flexible tang portion is connected to and extends away from the flexible leg portion. An endcap assembly is also disclosed. A filter assembly is also disclosed.

A Spin-on filter assembly that can be used with both suction-side and pressure-side filtration systems is described. The filter assembly screws onto a filter mounting head. The filter mounting head is part of a filtration system that provides fluid to be filtered to the filter assembly. The filter assembly filters the fluid to be filtered through a filter media contained within the filter assembly and provides the filtered fluid back to the filter mounting head. The filter assembly includes an upper seal that seals the clean side of the filter media from the dirty side of the filter media when the filter assembly is connected to the filter mounting head in an installed position. The upper seal includes a sealing ridge that has an elongated shape and is flexible such that the filter assembly can be used on both pressure-side and suction side applications in filtration systems.

A plate for a filter press, a filter press, the use of such a filter press as well as a method of cleaning and sterilization of such a filter press. The plate for a filter press has a base body, consisting of a first material with a hardness H.sub.1 and having an outer circumferential surface, and a frame arranged on the outer circumferential surface, consisting of a second material with a hardness H.sub.2, where H.sub.2<H.sub.1, and wherein the frame has on at least one side surface at least one encircling seal protruding relative to the side surface.