An eductor suitable for use in an assembly for preparing a liquid product comprises a housing having a substantially cylindrical wall. The eductor comprises an injector valve which is displaceably arranged within the cylindrical wall from first position to a second position longitudinally spaced from the first position, and vice versa. On its outer surface the injector valve comprises two annular protrusions which are spaced from each other, each of the annular protrusions engaging the inner surface of the cylindrical wall for forming a seal therewith, said annular protrusions together with the inner surface of the cylindrical wall forming an annular chamber, said protrusions being arranged for isolating the annular chamber from fluid communication with any environment outside the annular protrusions when said injector valve is positioned in the first position or the second position or any position in between.

An apparatus (12) for treating water, in particular for removing surfactants from waste water, includes a vessel (14), defining an inlet (16) for receiving waste water containing air bubbles, and an outlet (20) for the exit of water, following treatment. Inside the vessel there is at least one tubular member (50) having a lower open end (52) into which the flow of waste water from the inlet may be directed in use. The tubular member (50) extends from the inlet towards a top of the vessel where an upper exit (54) from the tubular member is defined. In use, most un-aerated water entering the vessel through the inlet can exit the tubular member at the lower open end. Foam formed in the water by the air bubbles may travel up the tubular member to the upper exit, which is preferably located above the water level (60) in the vessel.

A sealing vent for a foaming dispenser associated with a squeeze foaming container is described. The vent has an annular structure, with a central aperture encased by a multi-tiered disc section connected to inner facing of a thickened, axial wall. An upward angled, outer flange is connected on an outer facing of the axial wall, and the outer flange is attached at a lower elevation along the axial wall in comparison to the disc section.

A sealing vent for a foaming dispenser associated with a squeeze foaming container is described. The vent has an annular structure, with a central aperture encased by a multi-tiered disc section connected to inner facing of a thickened, axial wall. An upward angled, outer flange is connected on an outer facing of the axial wall, and the outer flange is attached at a lower elevation along the axial wall in comparison to the disc section.

A matter displacement and mixing system having a mixing chamber for material to enter, and a vortex aperture that directs air into the mixing chamber at either a high velocity for violent shearing or lower velocity for gentle mixing. This would depend on the shape of the vortex aperture, or the pressure.

The invention relates to a self-setting porous cement foam (2) comprising a protein foam as the structuring agent, the cement foam (2) having pores when set, and the cement foam has a water absorption coefficient of between 0.5 and 7 kg/(m.sup.2.Math.h0.5).

A clotting serum production device including a main chamber, an inlet housing, and an outlet port. The main chamber is defined by a first end wall, a second end wall opposite to the first end wall, and a side wall extending between the first end wall and the second end wall. The inlet housing extends from the first end wall. The inlet housing includes a first inlet port, a second inlet port, and a first conduit extending between the first inlet port and a second conduit. The second conduit extends between the second inlet port and the main chamber. The inlet housing is configured to provide one-way fluid flow from the first inlet port to the second inlet port and to provide one-way fluid flow from the second inlet port to the main chamber. An outlet port is in fluid communication with the main chamber and provides fluid communication with an exterior of the clotting serum production device.

A valvular conduit, preferably a Tesla valvular conduit, in which a plug member is coaxially received within a bore in a sleeve member and in which passageways are defined between the plug member and the sleeve member within interior walls configured to permit mixing of fluid flowing through the passageways in at least one direction, preferably, the relatively free passage of fluid through the passageways upstream but increased the resistance to downstream flow of the fluid through each passageway.

The embodiment relates to beverage dispensing, and more particularly to the dispensing of a carbonated beverage, from any container into a vessel, providing a portion of the beverage as foam atop the dispensed beverage. To avoid the reduction of absorbed carbon dioxide in a carbonated beverage, increased atmospheric pressure is employed to move the beverage from the container through the apparatus and into the vessel. An oscillating means provides a sonic wave through the conduit and the liquid therein; the sonic wave initiates the reaction between the carbon dioxide and the ingredients in the beverage to cause the liquid to foam prior to dispensing into the vessel. Iterations include an adaptable apparatus for a beer tap and a means for passing the liquid to be dispensed through a permeable container filled with soluble material or a permeable container filled with a filtration means.

A molten salt reactor includes a reactor vessel and a molten salt contained within the reactor vessel and undergoing a nuclear reaction. The molten salt includes insoluble metal fission products and dissolved gas fission products produced by the nuclear reaction. There is a separation unit configured to receive the molten salt and remove the insoluble metal fission products and dissolved gas fission products from the molten salt. The separation unit includes a laundering chamber into which the molten salt is introduced to form a froth containing the insoluble metal fission products and dissolved gas fission products. There is a filtration chamber, interconnected to the laundering chamber, configured to receive the froth from the laundering chamber and separate from the froth the insoluble metal fission products and dissolved gas fission products.