A method of flushing a toilet that includes opening a first valve to introduce a first supply of grey water into a passage to prime a siphon; opening a second valve to introduce a second supply of water into a bowl from a tank, the bowl having an outlet that is in fluid communication with an inlet of the passage; closing the first valve to shut off the first supply of water, evacuating the contents of the bowl through an outlet of the passage by way of the siphon generated by the introduction of the first supply of water and the introduction of the second supply of water; and closing the second valve to shut off the second supply of water.

The disclosure is directed to a dynamic siphon assembly according to some embodiments. In some embodiments, the dynamic siphon assembly includes a dynamic siphon that is configured to evacuate fluid from a cistern when pushed down. In some embodiments, the dynamic siphon assembly includes a full flush actuation assembly and a partial flush actuation assembly. In some embodiments, each actuation assembly is configured to break the siphonic action of the dynamic siphon at different times and water level. In some embodiments, the dynamic siphon includes an air trap configured to trap surrounding gas such that the dynamic siphon rises during filling of the cistern. In some embodiments, the rising prevents siphonic action by raising a fluid overflow within the dynamic siphon above a fluid level in the cistern.

The disclosure is directed to a dynamic siphon assembly according to some embodiments. In some embodiments, the dynamic siphon assembly includes a dynamic siphon that is configured to evacuate fluid from a cistern when pushed down. In some embodiments, the dynamic siphon assembly includes a full flush actuation assembly and a partial flush actuation assembly. In some embodiments, each actuation assembly is configured to break the siphonic action of the dynamic siphon at different times and water level. In some embodiments, the dynamic siphon includes an air trap configured to trap surrounding gas such that the dynamic siphon rises during filling of the cistern. In some embodiments, the rising prevents siphonic action by raising a fluid overflow within the dynamic siphon above a fluid level in the cistern.

Flush systems for flushing an object and flush toilets are disclosed. The flush system includes a first enclosed container for storing liquid to flush the object; a second container for filling liquid from a source; and a third enclosed container at least partially below each of the first enclosed container and the second container, the third enclosed container configured to contain liquid and gas and to be in fluid communication with each of the first enclosed container and the second container, and the first enclosed container and the second container configured to be in liquid communication via the third enclosed container. The gas in the third enclosed container is configured to exert a head pressure, via one or more conduits, to the liquid in the first enclosed container to flush the object.

Flush systems for flushing an object and flush toilets are disclosed. The flush system includes a first enclosed container for storing liquid to flush the object; a second container for filling liquid from a source; and a third enclosed container at least partially below each of the first enclosed container and the second container, the third enclosed container configured to contain liquid and gas and to be in fluid communication with each of the first enclosed container and the second container, and the first enclosed container and the second container configured to be in liquid communication via the third enclosed container. The gas in the third enclosed container is configured to exert a head pressure, via one or more conduits, to the liquid in the first enclosed container to flush the object.

A flushing apparatus (1, 301) for being installed in the cistern of a toilet including a flushing device (2) for fluid connection with an outlet of a cistern and a hydraulically-driven control circuit (3, 303) for operating the flushing device. The control circuit (3, 303) includes a water inlet (P) for fluidly connecting the control circuit (3, 303) to a source of pressurised water and an accumulator (6) fluidly connected to the water inlet (P) and configured to supplement, in use, the flow of pressurised water supplied by the source trough the control circuit (3, 303) to activate the flushing device (2).

A flush toilet apparatus for discharging waste by a jet pump action is disclosed. The flush toilet apparatus has an overflow portion configured to overflow a portion of flush water flowing from a throat pipe into a water conduit into a reservoir tank so that when the flow rate of water flowing inside the throat pipe exceeds a predetermined specified flow rate, the flow rate of water supplied from the water conduit to a bowl portion is reduced to less than a predetermined specified flow rate.

A fill valve assembly (9, 109) for connection with a flushing syphon or other flushing valve. The assembly (9, 109) includes a float operated equilibrium valve (90, 190) and a branch element (92, 192) fluidly connected upstream the equilibrium valve (90, 190) and including an outlet (98) for providing fluid flow to one or more fluid pressure driven actuators (6).

Disclosed is a flush toilet which comprises: a bowl portion having a waste-receiving surface and a rim provided along an upper edge of the waste-receiving surface; a drain trap conduit connected to the bowl portion to drain waste therethrough; a rim spout section including a rim spout port provided in a part of the rim located in a front region of the bowl portion for spouting the flush water, and a rim water-conducting passage provided to conduct flush water to the rim spout port; and a first water-conducting hose for supplying the flush water to the rim water-conducting passage located in the front region of the bowl portion, via beneath the waste-receiving surface, wherein the first water-conducting hose is configured to enable flush water to remain thereinside during stop of supply of the flush water.

A toilet assembly, comprising a toilet tank to hold flush water; a flush valve assembly positioned in the toilet tank; a toilet bowl; and a trapway inflow communication with the toilet bowl, wherein, the flush valve assembly comprises a container having an open lower end and a closed upper end; a siphon flush valve positioned in the container upper end; and a conduit positioned in an interior of the container, wherein the container is in flow communication with the toilet tank, the conduit is coupled to the trapway and provides flow communication between the container and the trapway, and the siphon flush valve comprises a tubular core, a head surrounding a top of the core, and a fluid spray initiator coupled to the head, the spray initiator configured to discharge water into the core to induce a siphon flow of surrounding tank water through the core.