Abstract: A filter element may include a tubular element, first and second end caps, each associated with an opposite end of the tubular element, filter media positioned around the tubular element and between the first and second end caps, a biasing element associated with the tubular element, and a retainer element positioned at a first end of the tubular element. The retainer element may include a retainer aperture including a central circular portion and two opposite lateral slots extending from opposite sides of the central circular portion, and two arcuate shoulder segments extending between opposite sides of the two opposite lateral slots.

Abstract: A filter element may include a tubular element, first and second end caps, each associated with an opposite end of the tubular element, filter media positioned around the tubular element and between the first and second end caps, a biasing element associated with the tubular element, and a retainer element positioned at a first end of the tubular element. The retainer element may include a retainer aperture including a central circular portion and two opposite lateral slots extending from opposite sides of the central circular portion, and two arcuate shoulder segments extending between opposite sides of the two opposite lateral slots.

Abstract: An insert for use with a filter cap is provided. The insert comprises a cover portion including a top surface, a bottom surface, and a hexagonal perimeter defining a center, and an attachment portion extending from the bottom surface of the cover portion including a cylindrical annular wall centered on the cover portion.

Abstract: A filter housing is provided. The filter housing includes a circumferential rib provided on an outer surface thereof. The filter housing also includes a first longitudinal rib provided on the outer surface thereof. The first longitudinal rib connects and extends away from the circumferential rib along a length of the filter housing. The first longitudinal rib defines a first thickness thereof. The first thickness tapers towards the circumferential rib. The filter housing further includes a second longitudinal rib provided on the outer surface thereof. The second longitudinal rib is provided opposing the first longitudinal rib. The second longitudinal rib connects and extends away from the circumferential rib along the length of the filter housing. The second longitudinal rib defines a second thickness thereof. The second thickness tapers towards the circumferential rib.

Abstract: A filter element may include a tubular element, first and second end caps, each associated with an opposite end of the tubular element, filter media positioned around the tubular element and between the first and second end caps, a biasing element associated with the tubular element, and a retainer element positioned at a first end of the tubular element. The retainer element may include a retainer aperture including a central circular portion and two opposite lateral slots extending from opposite sides of the central circular portion, and two arcuate shoulder segments extending between opposite sides of the two opposite lateral slots.

Abstract: A filter element is provided that has a generally cylindrical configuration and that defines a longitudinal axis and a radial direction. The filter element comprises a center tube that defines a central reservoir and that includes annular filter media surrounding the center tube and the central reservoir, an open end joined to the center tube disposed along the longitudinal axis, the open end including an opening allowing fluid to flow from the central reservoir to the outside of the filter element, and a closed end joined to the center tube opposite the open end disposed along the longitudinal axis, the closed end including an end cap comprising a body that defines an attachment pocket and an air pocket that surrounds the attachment pocket.

Abstract: A hose coupler includes a coupler body. The coupler body may extend from a proximal end to a distal end. The hose coupler may have a coupler bore extending through a length of the coupler body. The hose coupler may also have a flange disposed adjacent the distal end. The flange may project radially from the coupler body. The hose coupler may have a pair of tabs. The tabs may extend from the flange towards the proximal end of the coupler body.

Abstract: A filter housing is provided. The filter housing includes a circumferential rib provided on an outer surface thereof. The filter housing also includes a first longitudinal rib provided on the outer surface thereof. The first longitudinal rib connects and extends away from the circumferential rib along a length of the filter housing. The first longitudinal rib defines a first thickness thereof. The first thickness tapers towards the circumferential rib. The filter housing further includes a second longitudinal rib provided on the outer surface thereof. The second longitudinal rib is provided opposing the first longitudinal rib. The second longitudinal rib connects and extends away from the circumferential rib along the length of the filter housing. The second longitudinal rib defines a second thickness thereof. The second thickness tapers towards the circumferential rib.

Abstract: A hose coupler is disclosed. The house coupler may have a coupler body. The coupler body may extend from a proximal end to a distal end. The hose coupler may have a coupler bore extending through a length of the coupler body. The hose coupler may also have a flange disposed adjacent the distal end. The flange may project radially from the coupler body. The hose coupler may have a pair of tabs. The tabs may extend from the flange towards the proximal end of the coupler body.

Abstract: An insert for use with a filter cap is provided. The insert comprises a cover portion including a top surface, a bottom surface, and a hexagonal perimeter defining a center, and an attachment portion extending from the bottom surface of the cover portion including a cylindrical annular wall centered on the cover portion.

Abstract: A filter element may include a tubular element, first and second end caps, each associated with an opposite end of the tubular element, filter media positioned around the tubular element and between the first and second end caps, a biasing element associated with the tubular element, and a retainer element positioned at a first end of the tubular element. The retainer element may include a retainer aperture including a central circular portion and two opposite lateral slots extending from opposite sides of the central circular portion, and two arcuate shoulder segments extending between opposite sides of the two opposite lateral slots.

Abstract: A self-venting drain is provided that comprises a stem member that includes an attachment end and a shaft and that defines a longitudinal axis and a radial direction and a barrel member that defines at least one vent passage and at least one liquid flow passage wherein the vent passage and liquid flow passage are spaced away from the longitudinal axis along the radial direction on the same side of the longitudinal axis.

Abstract: A filter element is provided that has a generally cylindrical configuration and that defines a longitudinal axis and a radial direction. The filter element comprises a center tube that defines a central reservoir and that includes annular filter media surrounding the center tube and the central reservoir, an open end joined to the center tube disposed along the longitudinal axis, the open end including an opening allowing fluid to flow from the central reservoir to the outside of the filter element, and a closed end joined to the center tube opposite the open end disposed along the longitudinal axis, the closed end including an end cap comprising a body that defines an attachment pocket and an air pocket that surrounds the attachment pocket.

Abstract: A filter cartridge and filter system are disclosed. The filter cartridge includes a filter element, a filter housing, and precleaner element. The filter housing includes a sidewall surrounding the filter element and having a closed axial end located at one end of the sidewall, the closed axial end having an opening. The precleaner element is located near the axial end of the filter housing. The precleaner element includes an annular member disposed, an inner plate disposed within the annular member and having a vertical opening in fluid communication with the opening in the closed axial end of the filter housing, an upper plate disposed below the annular member, a support portion extending upward from the upper plate, a radial opening defined by the annular member, the upper plate, and the support portion, a fluid flow passage connecting the radial opening to the vertical opening.

Abstract: A filter cartridge and filter system are disclosed. The filter cartridge includes a filter element, a filter housing, and precleaner element. The filter housing includes a sidewall surrounding the filter element and having a closed axial end located at one end of the sidewall, the closed axial end having an opening. The precleaner element is located near the axial end of the filter housing. The precleaner element includes an annular member disposed, an inner plate disposed within the annular member and having a vertical opening in fluid communication with the opening in the closed axial end of the filter housing, an upper plate disposed below the annular member, a support portion extending upward from the upper plate, a radial opening defined by the annular member, the upper plate, and the support portion, a fluid flow passage connecting the radial opening to the vertical opening.