Filter cartridges and manifold blocks for filter manifold systems are described. The filter cartridges include flanges surrounding openings at first and second ends of the filter cartridge, with face seals in the flanges. Manifold blocks include end blocks, at least one of which is movable so that the distance between the end blocks can be changed. When a filter cartridge is installed into the manifold by engagement of the flanges with slots in the manifold end blocks, a fluid pathway is formed through a first manifold end block, into the filter cartridge, through the filter cartridge, out of the filter cartridge and into a second manifold end block. The fluid pathway is sealed by the face seals where the flow is from a manifold end block into or out of the filter cartridge.

Filter cartridges and manifold blocks for filter manifold systems are described. The filter cartridges include flanges surrounding openings at first and second ends of the filter cartridge, with face seals in the flanges. Manifold blocks include end blocks, at least one of which is movable so that the distance between the end blocks can be changed. When a filter cartridge is installed into the manifold by engagement of the flanges with slots in the manifold end blocks, a fluid pathway is formed through a first manifold end block, into the filter cartridge, through the filter cartridge, out of the filter cartridge and into a second manifold end block. The fluid pathway is sealed by the face seals where the flow is from a manifold end block into or out of the filter cartridge.

A filter assembly includes a manifold having a fluid inlet and a fluid outlet and a filter housing having a filter medium provided therein. The filter medium defines an inner filter chamber and defining an outer filter chamber between the filter medium and the filter housing. The filter housing is removably attached to the manifold so as to provide a fluid flow path from the inlet into the inner filter chamber, through the filter medium into the outer chamber and out of the outlet. The filter assembly also includes a valve assembly mounted inside the manifold, and a by-pass channel defined inside the manifold between the fluid inlet and the fluid outlet. The valve assembly comprises a valve spool and a valve spring arranged in engagement with the spool to bias the spool into a first position and to compress, in response to a pressure differential across the valve spool.

A filter assembly includes a manifold having a fluid inlet and a fluid outlet and a filter housing having a filter medium provided therein. The filter medium defines an inner filter chamber and defining an outer filter chamber between the filter medium and the filter housing. The filter housing is removably attached to the manifold so as to provide a fluid flow path from the inlet into the inner filter chamber, through the filter medium into the outer chamber and out of the outlet. The filter assembly also includes a valve assembly mounted inside the manifold, and a by-pass channel defined inside the manifold between the fluid inlet and the fluid outlet. The valve assembly comprises a valve spool and a valve spring arranged in engagement with the spool to bias the spool into a first position and to compress, in response to a pressure differential across the valve spool.

A filter cartridge of a filter group of a fluid of a vehicle extending along a main axis has a base assembly and engagement members, including first engagement members in the filter cartridge and second engagement members in the base assembly, shaped to block each other. The filter cartridge extends along a cartridge axis and includes an engagement plane on which the first engagement members are made having tooth elements diametrically opposite the cartridge axis. Each tooth element extends from the engagement plane parallel to the cartridge axis, having a stalk and a head. In the blocking configuration, the second engagement members engage the head. Each tooth element is radially elastically yielding, so the blocking configuration is achievable following radial movement of the tooth element. The first engagement members include for each tooth element a command device extending radially. Radial movement of the tooth element actuates the command device.

A filter cartridge of a filter group of a fluid of a vehicle extending along a main axis has a base assembly and engagement members, including first engagement members in the filter cartridge and second engagement members in the base assembly, shaped to block each other. The filter cartridge extends along a cartridge axis and includes an engagement plane on which the first engagement members are made having tooth elements diametrically opposite the cartridge axis. Each tooth element extends from the engagement plane parallel to the cartridge axis, having a stalk and a head. In the blocking configuration, the second engagement members engage the head. Each tooth element is radially elastically yielding, so the blocking configuration is achievable following radial movement of the tooth element. The first engagement members include for each tooth element a command device extending radially. Radial movement of the tooth element actuates the command device.

Various example embodiments relate to a filtration system. The filtration system comprises a housing having a first housing end and a second housing end. The housing defines a central compartment therein. The housing comprises a key slot disposed on the first housing end and a housing key element protruding from the first housing end toward the second housing end. The filtration system further comprises a filter element positioned within the central compartment of the housing. The filter element has a first filter end and a second filter end. The filter element includes filter media and an endplate disposed on the first filter end. The endplate includes a central endplate opening, a key element configured for engagement with the key slot, and an installation guidance element formed along the central endplate opening. The installation guidance element is configured for engagement with the housing key element.

A ring filter element for a filter device may include a connecting region and an axially projecting pin. The pin may include an arm via which the pin is connected to the connecting region. The arm may include a predetermined breaking point disposed spaced apart from the connecting region.

A ring filter element for a filter device may include a connecting region and an axially projecting pin. The pin may include an arm via which the pin is connected to the connecting region. The arm may include a predetermined breaking point disposed spaced apart from the connecting region.

A spin-on filter assembly with replaceable coreless element comprises: a reusable spin-on housing including a filter bowl having sealing structure on a bottom of the filter bowl and a sealing structure on a top of the filter bowl; a center support tube integral with the filter bowl and including a perforated tube and an upper portion having an threaded coupling allowing for the filter assembly to threaded into position and an exterior sealing structure; and a replaceable coreless filter element mounted on the central support tube within the filter bowl and having filter media, a lower sealing structure configured to engage with the sealing structure on the bottom of the filter bowl and an upper sealing structure configured to engage with the exterior sealing structure on the center support tube.