Abstract: A foam forming unit particularly suitable for a liquid container, comprising a pump for liquid and a pump for air, which are each provided with an inlet and an outlet, the foam forming unit further comprising a mixing chamber which is in communication with the outlet of each pump, a dispensing part provided with an outflow channel with a foam opening, the channel being in communication with the mixing chamber, and valves in respectively the inlet and the outlet of each pump for drawing in respectively delivering air and liquid, wherein one or more valves are formed integrally with the air pump or liquid pump into a single construction element.

Abstract: Dual component container systems are provided for separately storing at least two liquids, which are intermixed within the system prior to dispensing. Two or more containers having mixing openings are provided wherein the mixing openings are sealed by sealing members. The sealed openings of the containers are interconnected by one or more connecting elements, thereby forming a sealed conduit interposed between containers and wherein at least one of the sealing members is connected to the connecting element by a releasable clamping joint. Systems of the present invention are designed such that relative movement of the two containers causes the sealing members to open or be removed, whereby fluids from the two or more containers may intermix via the open conduit formed by the connecting element.