Abstract: Guide vane check valve assemblies and poppets for guide vane check valve assemblies are disclosed. A guide vane poppet includes an elongate central core configured to form a fluid seal with a valve body of the check valve assembly. The guide vane poppet additionally includes an elongate outer skirt and at least one guide vane radially extending between the elongate central core and the elongate outer skirt. A check valve assembly includes a valve body with a central cavity, an inlet to the central cavity, an outlet from the central cavity, and a spring seat, and further includes a spring and a poppet. The spring is oriented to press against the poppet and to urge a poppet-side sealing surface of the poppet into sealing engagement with a body-side sealing surface of the valve body.

Abstract: Guide vane check valve assemblies and poppets for guide vane check valve assemblies are disclosed. A guide vane poppet includes an elongate central core configured to form a fluid seal with a valve body of the check valve assembly. The guide vane poppet additionally includes an elongate outer skirt and at least one guide vane radially extending between the elongate central core and the elongate outer skirt. A check valve assembly includes a valve body with a central cavity, an inlet to the central cavity, an outlet from the central cavity, and a spring seat, and further includes a spring and a poppet. The spring is oriented to press against the poppet and to urge a poppet-side sealing surface of the poppet into sealing engagement with a body-side sealing surface of the valve body.

Abstract: A grid stiffened structure which includes a wall which extends in a direction transverse relative to a plane and an elongated rib connected along an elongated dimension of the rib to the wall such that the elongated rib extends along the wall and forms an angle with an axis which extends in a direction perpendicular to the plane. The elongated rib defines a free sidewall which extends from the wall positioned on a first side of the elongated rib and extends in a direction about the elongated rib and transverse to the elongated dimension to the wall positioned on a second side of the elongated rib. The wall and the elongated rib are constructed of a plurality of layers of material which extend in a direction transverse to the axis.

Abstract: Sealing structures and valve assemblies including the sealing structures. The sealing structures include a first body, which defines a first surface. The sealing structures also include a second body, which defines a second surface. The second body also defines a gland, which extends into the second body from the second surface, defines a gland opening on the second surface, and is free of both a tool entry point and a tool exit point. The second body further defines a retention structure projecting partially across the gland. The sealing structure also includes a resilient sealing body positioned within the gland. The retention structure retains the resilient sealing body within the gland, and the resilient sealing body forms a fluid seal between the first body and the second body when the resilient sealing body is brought into pressing engagement with both the first surface and the gland.

Abstract: Guide vane check valves, guide vane check valve assemblies, and poppets for guide vane check valve assemblies are disclosed. A guide vane poppet includes an elongate central core configured to form a fluid seal with a valve body of the check valve assembly. The guide vane poppet additionally includes an elongate outer skirt and at least one guide vane radially extending between the elongate central core and the elongate outer skirt. A check valve assembly includes a valve body with a central cavity, an inlet to the central cavity, an outlet from the central cavity, and a spring seat, and further includes a spring and a poppet. The spring is oriented to press against the poppet and to urge a poppet-side sealing surface of the poppet into sealing engagement with a body-side sealing surface of the valve body.

Abstract: Sealing structures and valve assemblies including the sealing structures are disclosed herein. The sealing structures include a first body, which defines a first surface. The sealing structures also include a second body, which defines a second surface. The second body also defines a gland, which extends into the second body from the second surface, defines a gland opening on the second surface, and is free of both a tool entry point and a tool exit point. The second body further defines a retention structure projecting partially across the gland. The sealing structure also includes a resilient sealing body positioned within the gland. The retention structure retains the resilient sealing body within the gland, and the resilient sealing body forms a fluid seal between the first body and the second body when the resilient sealing body is brought into pressing engagement with both the first surface and the gland.

Abstract: A grid stiffened structure which includes a wall which extends in a direction transverse relative to a plane and an elongated rib connected along an elongated dimension of the rib to the wall such that the elongated rib extends along the wall and forms an angle with an axis which extends in a direction perpendicular to the plane. The elongated rib defines a free sidewall which extends from the wall positioned on a first side of the elongated rib and extends in a direction about the elongated rib and transverse to the elongated dimension to the wall positioned on a second side of the elongated rib. The wall and the elongated rib are constructed of a plurality of layers of material which extend in a direction transverse to the axis.

Abstract: An antivortex device for use in suppressing formation of a vortex created by fluid flowing through multiple outlet ports defined in a sump is provided. The antivortex device includes a plurality of center plates extending through a central axis of the sump, an extension plate substantially aligned with one of the plurality of center plates and extending substantially radially outward from the central axis, and a top plate coupled to the plurality of center plates.

Abstract: Guide vane check valves, guide vane check valve assemblies, and poppets for guide vane check valve assemblies are disclosed. A guide vane poppet includes an elongate central core configured to form a fluid seal with a valve body of the check valve assembly. The guide vane poppet additionally includes an elongate outer skirt and at least one guide vane radially extending between the elongate central core and the elongate outer skirt. A check valve assembly includes a valve body with a central cavity, an inlet to the central cavity, an outlet from the central cavity, and a spring seat, and further includes a spring and a poppet. The spring is oriented to press against the poppet and to urge a poppet-side sealing surface of the poppet into sealing engagement with a body-side sealing surface of the valve body.

Abstract: A liquid reservoir with a sump includes at least two outlet ports in fluid communication with a fluid conduit. An anti-vortex device includes a first plate extending across the at least two outlet ports and a second plate coupled to the first plate and extending substantially perpendicular to the first plate. The anti-vortex device is configured to disrupt formation of a vortex formed by liquid passing from the reservoir through said outlet ports.

Abstract: An antivortex device for use in suppressing formation of a vortex created by fluid flowing through multiple outlet ports defined in a sump is provided. The antivortex device includes a plurality of center plates extending through a central axis of the sump, an extension plate substantially aligned with one of the plurality of center plates and extending substantially radially outward from the central axis, and a top plate coupled to the plurality of center plates.