Multi-chamber vessel

A vessel, comprising:

• a body comprising an interior surface that defines an interior space;
• a flexible membrane located within the interior space of the vessel, wherein the flexible membrane divides the interior space of the vessel into a first chamber and a second chamber, and wherein the flexible membrane comprises:
• a first surface that defines a portion of the first chamber;
• a second surface that defines a portion of the second chamber;
• and
• a ribbed structure extending from the first surface of the flexible membrane, wherein the ribbed structure comprises a base portion that includes a plurality of arms extending outwards from a center hub;
• a valve configured to provide selective fluid communication between the first chamber and an exterior of the vessel;
• and
• one or more ribs protruding from at least a portion of the interior surface within the first chamber, wherein the one or more ribs create one or more flow paths configured to allow flow of a contents of the vessel from the first chamber towards an opening of the valve when the flexible membrane is in contact with the one or more ribs.

A vessel, comprising:

• a body comprising an interior surface;
• a liner that engages with at least a portion of the interior surface, the liner having an inner surface that defines an interior space of the vessel;
• a flexible membrane located within the interior space of the vessel, wherein the flexible membrane divides the interior space of the vessel into a first chamber and a second chamber;
• a valve configured to provide selective fluid communication between the first chamber and an exterior of the vessel;
• and
• one or more ribs protruding and extending from the inner surface of the liner into the first chamber, wherein the one or more ribs create one or more flow paths within the first chamber configured to allow flow of a contents of the vessel from the first chamber towards an opening of the valve when the flexible membrane is in contact with the one or more ribs, wherein the one or more ribs extend outwards from a center portion proximate to the opening of the valve, wherein the center portion has a reduced depth compared to the one or more ribs.