The present disclosure discloses an effort-saving flap-type drain valve, comprising a base with a drain port, a flapper capable of hermetically covering and connecting to the drain port, an actuator connected to the flapper, and a connecting rod rotationally connected to the base and the flapper at two ends respectively, wherein the actuator is capable of causing the flapper to rotate relative to the connecting rod, and the actuator is capable of simultaneously causing the flapper to rotate about a first rotation pivot formed at a position where the flapper is in contact with the base to initially open the drain port; and wherein the actuator is capable of causing the flapper and the connecting rod to rotate together about a second rotation pivot formed at a rotational connection between the connecting rod and the base to further open the drain port.

A float comprises an outer float wall, an inner guide, and a float base. The float base further comprises an outer perimeter and a disk portion. The disk portion includes a central aperture to allow the float base to move with respect to a sleeve. A plurality of apertures are formed within the disk structure. In addition, a structure is formed within the float base to allow the float base to be captured within a bottom portion of the float at a fastening structure.

A float comprises an outer float wall, an inner guide, and a float base. The float base further comprises an outer perimeter and a disk portion. The disk portion includes a central aperture to allow the float base to move with respect to a sleeve. A plurality of apertures are formed within the disk structure. In addition, a structure is formed within the float base to allow the float base to be captured within a bottom portion of the float at a fastening structure.

The disclosure is directed to a flapper system and a flapper system kit that is compatible with both 2″ and 3″ flush valve seats. In some embodiments, the flapper system is configured to enable a user to select either a 2″ or 3″ flush valve seal for the flapper system. In some embodiments, the flapper system includes a pivot that enables sealing of a flat flush valve seat or an angled flush valve seat. In some embodiments, the flapper system includes one or more adjustable window assemblies that control a fluid flowrate within an internal portion of the flapper system to control buoyancy. In some embodiments, the flapper system includes an adaptor that converts a 2″ valve into a 3″ valve.

The disclosure is directed to a flapper system and a flapper system kit that is compatible with both 2″ and 3″ flush valve seats. In some embodiments, the flapper system is configured to enable a user to select either a 2″ or 3″ flush valve seal for the flapper system. In some embodiments, the flapper system includes a pivot that enables sealing of a flat flush valve seat or an angled flush valve seat. In some embodiments, the flapper system includes one or more adjustable window assemblies that control a fluid flowrate within an internal portion of the flapper system to control buoyancy. In some embodiments, the flapper system includes an adaptor that converts a 2″ valve into a 3″ valve.

An improved toilet flapper valve is used to cover and seal a main flush valve orifice, which flapper valve comprises a pair of rotatable legs and leg clips having two-way adjustment capabilities and which serve to function as mounting arms. The two-way adjustment of the rotatable leg clips allows for use of the same flapper valve with a variety of makes and models of flush valves, and flush valves having pegs that may be spaced apart so as to adjust for pegs that may have different diameters or that may be separated from one another by different distances depending on the flush valve used in the toilet. The flapper valve of the present invention also includes a variably-adjustable air outlet capability.

A toilet cleaning system integrated with a flush valve of a toilet so that a cleaning agent is kept separate from sensitive seals of a tank of the toilet. Additionally, the toilet cleaning system provides a path for the cleaning agent solution to pass through a rim of a bowl of the toilet so that most of the toilet bowl is affected by the solution.

A cistern comprises an upper water tank as a first chamber, and a lower water tank as a second chamber connected by an opening. At the top of the upper tank a mains water inlet allows mains water into the tank through an inlet valve, which is under the control of an upper float. An auxiliary water inlet allows water from an auxiliary supply, such as condensate from an air-conditioning unit, into the tank. At the bottom of lower tank is an water outlet, which allows flushing water from the lower tank 104 to flush an appliance (not shown) under the control of an outlet valve. The outlet valve is under the control of an actuator, which is configured to move up and down, and is also under the control of a lower float.

A cistern comprises an upper water tank as a first chamber, and a lower water tank as a second chamber connected by an opening. At the top of the upper tank a mains water inlet allows mains water into the tank through an inlet valve, which is under the control of an upper float. An auxiliary water inlet allows water from an auxiliary supply, such as condensate from an air-conditioning unit, into the tank. At the bottom of lower tank is an water outlet, which allows flushing water from the lower tank 104 to flush an appliance (not shown) under the control of an outlet valve. The outlet valve is under the control of an actuator, which is configured to move up and down, and is also under the control of a lower float.

A flush water tank assembly includes: a flush water supply device for switching between a water supplying state and a water stopping state with respect of an inside of the water storage tank in terms of flush water; a small tank attached to the flush water supply device and configured to hold therein flush water; an openable and closable valve for opening and closing an opening in the bottom wall of the small tank; a float movable upwardly and downwardly according to change in water level within the small tank; and a water discharge valve device for opening and closing a water discharge port of the water storage tank, and the openable and closable valve has an auxiliary float element configured to be moved upwardly and downwardly according to change in water level within the small tank.