Provided are a flush water tank apparatus capable of restraining instability of an operation of a piston and restraining fluctuations in a water pressure of flush water discharged from a first discharge part provided separately from an inlet, and a flush toilet apparatus including the flush water tank apparatus. A discharge valve hydraulic drive portion of a flush water tank apparatus of the present invention includes a cylinder, a piston, and a rod extending from the piston through a through-hole portion formed in the cylinder, the cylinder including an inlet into which flush water flows, a first discharge part that is provided separately from the inlet to drain the flush water, and a second discharge part that is provided separately from the first discharge part and is formed between the rod and the through-hole portion and between the piston and the through-hole portion.

A flush toilet includes a toilet main body and a tank device for supplying flush water to the toilet main body, where the tank device includes a storage tank provided behind the toilet main body and above a floor surface, the storage tank includes a large tank section and a small tank section and has an asymmetrical shape in a front-back or left-right direction, the large tank section being a large-capacity side of the storage tank that is divided into two at a center in the left-right direction when seen in the front-back direction, the small tank section being a small-capacity side of the storage tank that is divided into two at the center in the left-right direction, and the storage tank or the toilet main body includes a deformation-preventing supporting member for preventing deformation of the storage tank by supporting the storage tank.

A flush toilet includes a toilet main body and a tank device, and the tank device includes a storage tank and a tank mounting member to which the storage tank is detachably attached. At a time of attachment of the storage tank to the tank mounting member, an attaching portion of the storage tank is engaged with an attachment-receiving portion of the tank mounting member by the storage tank being lowered onto a base of the tank mounting member from above. Then, when the storage tank is moved in a horizontal direction relative to the tank mounting member, the attaching portion of the storage tank is configured to be fixed to the attachment-receiving portion of the tank mounting member.

A flush toilet includes a toilet main body and a tank device, and the tank device includes a storage tank and a tank mounting member to which the storage tank is detachably attached. At a time of attachment of the storage tank to the tank mounting member, an attaching portion of the storage tank is engaged with an attachment-receiving portion of the tank mounting member by the storage tank being lowered onto a base of the tank mounting member from above. Then, when the storage tank is moved in a horizontal direction relative to the tank mounting member, the attaching portion of the storage tank is configured to be fixed to the attachment-receiving portion of the tank mounting member.

The flush water tank apparatus of the present invention includes: a clutch mechanism 30 coupling the discharge valve 12 and the discharge valve hydraulic drive unit 14 to pull up the discharge valve, and being disconnected at a predetermined timing to cause the discharge valve to descend; flush water amount selection device capable of selecting from a first and a second amounts of flush water; a float device 26 including a float and a holding mechanism switchable between a holding and a non-holding states in conjunction with movement of the float; and a timing control mechanism controlling a timing of a drain port 10a being blocked; and, when the second amount is selected, causes the second amount of flush water to be discharged by switching the holding mechanism to the non-holding state before a water level in a storage tank drops to a predetermined water level.

The water-dispensing system with toilet comprises a water generation system and a toilet. The toilet further comprises a water storage tank and an external power source. The water generation system and the water storage tank of the toilet are fluidically connected. The water generation system electrically connects to the external power source. The water-dispensing system with toilet is powered using electrical energy provided by an external power source.

The water-dispensing system with toilet comprises a water generation system and a toilet. The toilet further comprises a water storage tank and an external power source. The water generation system and the water storage tank of the toilet are fluidically connected. The water generation system electrically connects to the external power source. The water-dispensing system with toilet is powered using electrical energy provided by an external power source.

A device for generating a controlled flow event to regulate a hydraulic condition of a piping system of a building is an electrically-powered fluid pump or fluid valve, having a fluid inlet and fluid outlet. The fluid inlet is configured to be in fluidic communication with a tank of a toilet or is supplied water from the piping system of the building. The fluid outlet is in fluidic communication with either: i) a bowl of the toilet; ii) an overflow tube of the toilet tank; or iii) the tank of the toilet; iv) or a drain. An electronic controller controls the operation of the device and is configured to repeatedly turn on and off the electrically-powered fluid pump for a predetermined elapsed time when the hydraulic condition is identified. The hydraulic condition may be a potential freezing condition or an overly high pressure of the piping system of the building.

A pet drinking bowl system has a toilet tank lid with sidewalls and a top wall with a molded-in bowl, an overflow opening in the bowl, the overflow opening communicating with an overflow passage through the top wall flowing excess water from the bowl to the toilet tank, and a fill passage through the top connecting by a flexible tube under the lid to a fill mechanism in the toilet tank, and above the lid to a spout shaped to provide a stream of water in an arc above the bowl into the bowl. During a flush and fill cycle water from the fill mechanism is supplied to the spout, which provides water in a stream to the bowl, and excess water in the bowl drains back to the toilet tank through the overflow opening.

Provided is a tank device capable of restraining splashing of flush water during water supply to suppress a water slapping sound. A tank device for supplying flush water stored therein to a flush toilet comprises: a tank main unit for storing flush water in an internal space 24C thereof defined by an inner wall surface which comprises a transverse surface 27B extending in a transverse direction and a standing surface 27A extending in an up-down direction; and a water supply member 26 for supplying flush water from a water supply port 26A to the internal space of the tank main unit, the water supply member 26 being configured to spout flush water toward the inner wall surface defining the internal space 24C, wherein the tank main unit comprises a flow rectifying portion 46 provided in a region of the inner wall surface to which flush water is spouted, the flow rectifying portion 46 having a convex part 46A and a concave part 46B each formed on the inner wall surface.