Devices and methods are provided for sensing and stopping an excessive water-flow condition in a water-using appliance such as a toilet. Such excessive water-flow conditions can occur, for example, when a leak or other malfunction is present in the appliance. The devices measure and monitor the time that elapses after the commencement of water flow to the appliance, and interrupt the water supply when the elapsed time reaches a predetermined value. Alternatively, the devices measure and monitor the cumulative volume of water that flows to the appliance after the commencement of water flow, and interrupt the water supply when the cumulative volume reaches a predetermined value.

At least one embodiment relates to a quick-coupling mechanism including a clamp spring configured to receive a valve body. The clamp spring is coupled to a release button configured to manipulate one or more arms of the clamp spring. The quick-coupling mechanism includes a base structure coupled to the toilet pedestal/bowl. The base structure is configured to hold the clamp spring in place. In a locking-state, the clamp spring seats in a groove in the valve body thus securing the valve body in place and preventing an axial movement of the valve body relative to the clamp spring. In a non-locking state, the release button bends the arms of the clamp spring outwardly to increase the diameter of the clamping portion, thus releasing valve body such that the valve body can move axially relative to the clamp spring.

The present utility model relates to the field of manufacture of sanitary wares, and provides a toilet. The toilet includes a seat body with a sewage accommodating bowl, and a cistern. The inside of the cistern is provided with a fill valve, a first ring flushing pipeline, a first water inlet end of the first ring flushing pipeline is selectively in fluid communication with the fill valve, a first water outlet end of the first ring flushing pipeline is in fluid communication with a ring flushing port opening, and the first ring flushing pipeline includes a first jet flow increasing structure; a second bottom flushing pipeline, a second water inlet end of the second bottom flushing pipeline is selectively in fluid communication with the fill valve, and the second bottom flushing pipeline includes a second jet flow increasing structure; and a pipeline switching mechanism, being able to automatically switch the fluid communication between the first ring flushing pipeline and the fill valve or between the second bottom flushing pipeline and the fill valve in response to a water level in the cistern. By using such toilet, the sewage accommodating bowl can be more cleanly and thoroughly flushed with the same water consumption, or a low-profile cistern design can be realized under the same water pressure requirement.

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 flush actuator device with a foot pedal for actuating a flush action at a toilet is provided. The flush actuator device may replace or supplement a manual handle on a conventional toilet and allows flushing action to be initiated by depressing a foot pedal on a floor surface adjacent the toilet. With the flush actuator device, a flush action can be performed using the foot pedal without necessitating any contact with the other parts of the toilet which may be deemed dirty or unsanitary, particularly in public restroom settings. A method of installing the flush actuator device onto an existing toilet is provided. Further, a method for actuating flushing of a toilet using a flush actuator device having a foot pedal is described. The ability to retroactively fit the flush actuator device to an existing toilet eliminates the need for complicated and expensive plumbing fixture replacement.

The present utility model relates to the field of manufacture of sanitary wares, and provides a toilet. The toilet includes a seat body with a sewage accommodating bowl, and a cistern. The inside of the cistern is provided with a fill valve, a first ring flushing pipeline, a first water inlet end of the first ring flushing pipeline is selectively in fluid communication with the fill valve, a first water outlet end of the first ring flushing pipeline is in fluid communication with a ring flushing port opening, and the first ring flushing pipeline includes a first jet flow increasing structure; a second bottom flushing pipeline, a second water inlet end of the second bottom flushing pipeline is selectively in fluid communication with the fill valve, and the second bottom flushing pipeline includes a second jet flow increasing structure; and a pipeline switching mechanism, being able to automatically switch the fluid communication between the first ring flushing pipeline and the fill valve or between the second bottom flushing pipeline and the fill valve in response to a water level in the cistern. By using such toilet, the sewage accommodating bowl can be more cleanly and thoroughly flushed with the same water consumption, or a low-profile cistern design can be realized under the same water pressure requirement.

A flush actuator device with a foot pedal for actuating a flush action at a toilet is provided. The flush actuator device may replace or supplement a manual handle on a conventional toilet and allows flushing action to be initiated by depressing a foot pedal on a floor surface adjacent the toilet. With the flush actuator device, a flush action can be performed using the foot pedal without necessitating any contact with the other parts of the toilet which may be deemed dirty or unsanitary, particularly in public restroom settings. A method of installing the flush actuator device onto an existing toilet is provided. Further, a method for actuating flushing of a toilet using a flush actuator device having a foot pedal is described. The ability to retroactively fit the flush actuator device to an existing toilet eliminates the need for complicated and expensive plumbing fixture replacement.

The commode having a catch basin attached to the water reservoir tank at a position above the water reservoir tank water line. A pressurized water line is used to supply fresh water to a nozzle mounted in the catch basin. An actuator allows water to be dispensed through the nozzle for the purposes of moistening toilet paper. The catch basin includes a lower drain hole in fluid communication with the flush tank to drain water therein at a predetermined rate, and an upper opening draining into the flush tank to prevent overflowing of said catch basin.

There is provided a flush water tank apparatus capable of returning to a state where next toilet flush operation can be started in a short time while opening a discharge valve using a water supply pressure. A flush water tank apparatus (4) includes a reservoir tank (10), a discharge valve (12), a discharge valve hydraulic drive portion (14) configured to drive the discharge valve using a water supply pressure, and a discharge/vacuum break valve device (30) provided on an upstream side of the discharge valve hydraulic drive portion and configured to supply the water supplied from the upstream side to the discharge valve hydraulic drive portion on a downstream side. The discharge valve hydraulic drive portion includes a cylinder (14a) into which the water from the discharge/vacuum break valve device flows, and a piston (14b) configured to be moved by a pressure of the water flowing into the cylinder to move the discharge valve. The discharge/vacuum break valve device includes a valve body that operates to discharge the water flowing backward from the discharge valve hydraulic drive portion while opening the upstream side to an atmosphere when the supply of the water from the upstream side is stopped.

The disclosed technology includes a tank system including a gravity tank configured to contain water at atmospheric pressure, a rigid pressurized tank positioned within the gravity tank and configured to contain water at a pressure greater than atmospheric pressure, and a piston assembly positioned below the rigid pressurized tank and configured to open and close the rigid pressurized tank. The gravity tank is configured to channel water at atmospheric pressure into a toilet bowl at a first velocity and the rigid pressurized tank is configured to channel water at the pressure greater than atmospheric pressure into the toilet bowl at a second velocity. The second velocity is greater than the first velocity.