A flushing device for a urinal comprises a connection unit and a control unit, wherein the connection unit can be fixed to the urinal and the control unit can be connected to the connection unit via an interface. The connection unit comprises a connection pipe with an inlet, for connection to a mains system, and an outlet, a flushing pipe with an inlet and an outlet for connection to a nozzle arrangement for discharging flushing water into the urinal bowl of the urinal, and a support element on which the outlet of the connection pipe and the inlet of the flushing pipe are mounted in a fixed position. The control unit comprises a support element on which are arranged at least one control element, a pipe section with an inlet and an outlet and a flushing valve, which is arranged between the inlet and outlet and has a power-supply element.

An overflow prevention system includes a toilet that has a tank, a flapper and a bowl. A closure unit is positioned in the tank of a toilet and the closure unit is aligned with the flapper in the toilet tank. The closure unit engages the flapper when the closure unit is turned on to inhibit the flapper from opening. In this way the closure unit can inhibit the toilet from overflowing when the toilet is flushed. A pair of conductors is each positioned in the bowl and each of the conductors is exposed to water when the bowl of the toilet becomes filled with water. The conductors are in electrical communication with the closure unit and the closure unit is turned on when a circuit is completed between the exposed ends of the conductors. Thus, the closure unit inhibits the bowl of the toilet from overflowing when the toilet is flushed.

A fluid valve with a modular and/or replaceable fluid control assembly is disclosed, and is configured and arranged to require maintenance over a product life of the fluid valve. The modular and/or replaceable fluid control assembly includes at least one portion including a setting or presetting configured and arranged to control fluid flow behavior in the fluid valve. The setting or presetting is useable to control fluid flow in the modular and/or replaceable fluid control assembly after an upgrade or replacement of at least a portion of the modular and/or replaceable fluid control assembly. Further, the setting or presetting enables the modular and/or replaceable fluid control assembly to retain the fluid flow behavior following one or more upgrades or replacements of one or more portions of the modular and/or replaceable fluid control assembly.

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.

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 valve assembly including a manifold including an inlet, an outlet, and a fluid passageway positioned between the inlet and the outlet, a motor coupled to the manifold and including a drive gear, a valve cartridge coupled to the manifold, and a shaft extending from the valve cartridge. The shaft includes a valve gear configured to mesh with the drive gear. Rotational motion from the motor is transferred through the drive gear, the valve gear, and the valve shaft to rotate the valve cartridge between a first position and a second position. The flush valve assembly additionally includes a bracket removably coupled to the manifold. The bracket is configured to align the drive gear and the valve gear in a predetermined position.

A flush valve assembly including a manifold including an inlet, an outlet, and a fluid passageway positioned between the inlet and the outlet, a motor coupled to the manifold and including a drive gear, a valve cartridge coupled to the manifold, and a shaft extending from the valve cartridge. The shaft includes a valve gear configured to mesh with the drive gear. Rotational motion from the motor is transferred through the drive gear, the valve gear, and the valve shaft to rotate the valve cartridge between a first position and a second position. The flush valve assembly additionally includes a bracket removably coupled to the manifold. The bracket is configured to align the drive gear and the valve gear in a predetermined position.

The present invention relates to a toilet flushing device using a toilet cover. More specifically, the present invention comprises: a sliding means disposed at the front side of a water tank and configured to slide forward/backward by magnetic force to allow a drain valve to operate as soon as a toilet cover is closed; and an operation lever disposed at the rear side of the sliding means so as to open or close the drain valve, wherein the drain valve is operated to flush water by a structure in which the sliding means and the operation lever operate in cooperation in response to an operation of the toilet cover after use of the toilet. Therefore, the present invention can induce the habit of covering the toilet by the toilet cover after using the toilet and thus enhance a sanitary culture.

The present invention relates to a toilet flushing device using a toilet cover. More specifically, the present invention comprises: a sliding means disposed at the front side of a water tank and configured to slide forward/backward by magnetic force to allow a drain valve to operate as soon as a toilet cover is closed; and an operation lever disposed at the rear side of the sliding means so as to open or close the drain valve, wherein the drain valve is operated to flush water by a structure in which the sliding means and the operation lever operate in cooperation in response to an operation of the toilet cover after use of the toilet. Therefore, the present invention can induce the habit of covering the toilet by the toilet cover after using the toilet and thus enhance a sanitary culture.

There are provided a flush water tank apparatus capable of accurately setting the amount of flush water to be discharged while opening a discharge valve by a discharge valve hydraulic drive unit. A flush water tank apparatus includes a valve controller, where, in a case where a first amount of flush water is selected, the valve controller causes the timing control mechanism to be engaged with the discharge valve and causes the timing control mechanism to operate such that engagement is released after a lapse of a first period of time, and in a case where a second amount of flush water is selected, the valve controller causes the timing control mechanism to be engaged with the discharge valve and causes the timing control mechanism to operate such that engagement is released after lapse of a second period of time shorter than the first period of time.