A filter manifold includes a housing and a shuttle. The shuttle is disposed within the housing such that the shuttle is movable relative to the housing between a plug position and a flow position along an axial direction. The shuttle is also coupled to the housing such that the shuttle is non-rotatable relative to the housing about the axial direction. A spring is disposed within the housing. The spring is connected to the shuttle such that the tension spring urges the shuttle towards the plug position. The shuttle is positioned at the flow position of the shuttle when a filter cartridge is coupled to the filter manifold.

A filter element, filter head, a filter system and methods of assembling or mounting a filter element to a filter head are provided. The filter element and filter head have cooperating axially undulating sealing regions. The filter head has a spud that has a non-cylindrical region that extends through a non-circular opening in the filter element to communicate a central bore of the spud with a central cavity defined by filter media of the filter element. The method includes angularly aligning the undulating sealing regions by inserting the non-cylindrical region of the spud through the non-circular opening of the filter element.

A filterwell cartridge holder having a face for compressible engaging pleats on a water filter cartridge and a further face holding a dispensing cartridge thereon in a position to release dispersants into a filterwell containing a water filter cartridge.

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 pressure control device includes a body with a groove-shaped flow path including a groove part and a widened part connected to the groove part and having a width larger than a width of the groove part; and a filter member accommodated in the widened part to intercept the groove-shaped flow path and capturing foreign matters mixed in a fluid passing through the groove-shaped flow path. The filter member is in a cylindrical shape whose central axis is along a depth direction of the widened part, has elasticity in its radial direction, and is energized toward a radial-direction outer side when accommodated in the widened part to contact the widened part.

An apparatus having a bottom assembly for interfacing to connect the bottom assembly to a second structure, having a deformable element that, when sufficient force is applied via the process of attaching the bottom assembly to the second structure, and at an appropriate value of axial compression or pressure, passes from a stable state, through a rapid shape transformation to a second state via a regime of reduced resistance to deformation, creating a tactile or audible indication that the apparatus has been properly installed. The deformable element may be joined to the apparatus using a circumferential insertion ring by friction fit or spring fit, may be inserted inwardly of a sealing surface and may adhere magnetically to the second structure to facilitate installation.

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.

A filter holder for holding an open ended filter having an open proximal end and an open distal end in an operative position on a swimming pool cleaner having a pipe stub for receiving one open end of the filter is shown and described. The filter holder includes a cap for covering one open end of the filter, a coupler configured to cooperate with and engage the pipe stub, and a spanning connector configured to span and connect the cap and the coupler outside the pipe stub of the filter. The coupler may include L-shaped brackets. A constricting collar pins the brackets to the pipe stub. The spanning connector may include compression rods and nuts. The filter holder may include an optional adapter collar separable from the coupler, to adapt diameters of the coupler and the pipe stub. The invention may alternatively be considered to be a mobile swimming pool cleaner having a pleated medium filter rather than a flaccid bag filter.

A filter device has a cup-shaped filter housing and a filter element disposed in the filter housing. A filter head is connectable to the filter housing and forms a cover for the filter housing. A spring element is provided that is acting on the filter element. The filter head has at least one first form-fit element. The filter housing has at least one second form-fit element for interacting with the at least one first form-fit element. The spring element is arranged such that the filter head and the filter housing for reaching a closed position, in which the at least one first form-fit element and the at least one second form-fit element engage each other, are movable relative to each other axially against the force of the spring element. The spring element clamps the filter element axially between filter head and filter housing in the closed position.

A filter insert (10) comprising: a body portion (12) and a closed-ended tube (14), an open end of which is sealingly affixed around the periphery of the body portion (12); an inlet aperture (16) and an outlet aperture (18) each aperture communicating via a through hole in the body portion (12) with the interior of the tube (14); a filter medium (20) located within the tube (14) and being sealingly interposed between the inlet aperture (16) and the outlet aperture (18), wherein the tube (14) is at least partially manufactured of a flexible plastics material, and wherein the body portion (12) is relatively rigid.