A waste and overflow system for a bathtub includes an overflow assembly, a drain assembly, and a plumbing assembly. The overflow assembly or kit includes an elbow pipe attachable to the plumbing assembly, a seal member positioned between an end of the elbow pipe and the bathtub, and a retainer ring that is threadingly connected to the elbow pipe to sandwich the seal member between a portion of the elbow pipe and the outer surface of the bathtub. The overflow assembly or kit further includes a faceplate operatively connected to the retainer ring. The faceplate can be formed as a screwless faceplate directly connected to the retainer ring in a first operative mode or a screwable faceplate attached by a screw to an adapter that is connected to the retainer ring in a second operative mode.

A drainage assembly and a sink are provided. The drainage assembly includes a base body. Two ends of the base body are provided with an input port and an output port respectively. The input port is communicated with the output port by a flow channel located in the base body. The flow channel includes an upper chamber communicated with the input port and a lower chamber communicated with the output port. The base body is provided with a switch mechanism configured to control connection and disconnection between the upper chamber and the lower chamber. The base body is provided with a water inlet connector and a liquid level measurement connector that are separately communicated with the upper chamber. The drainage assembly and the sink have liquid level measurement and water supply functions in addition to a drainage function.

A drainage assembly and a sink are provided. The drainage assembly includes a base body. Two ends of the base body are provided with an input port and an output port respectively. The input port is communicated with the output port by a flow channel located in the base body. The flow channel includes an upper chamber communicated with the input port and a lower chamber communicated with the output port. The base body is provided with a switch mechanism configured to control connection and disconnection between the upper chamber and the lower chamber. The base body is provided with a water inlet connector and a liquid level measurement connector that are separately communicated with the upper chamber. The drainage assembly and the sink have liquid level measurement and water supply functions in addition to a drainage function.

A drain system for controlling a water level in a bathtub includes a drain exit assembly coupled to an exit drain of the bathtub and configured to receive water exiting the bathtub, a valve fluidly coupled to the drain exit assembly and operably coupled to a motor, and a pressure sensor communicatively coupled to the valve and in fluid communication with the drain exit assembly. The motor is configured to change the operational state of the valve based on a pressure sensed by the pressure sensor to control a water level within the bathtub.

A drain system for controlling a water level in a bathtub includes a drain exit assembly coupled to an exit drain of the bathtub and configured to receive water exiting the bathtub, a valve fluidly coupled to the drain exit assembly and operably coupled to a motor, and a pressure sensor communicatively coupled to the valve and in fluid communication with the drain exit assembly. The motor is configured to change the operational state of the valve based on a pressure sensed by the pressure sensor to control a water level within the bathtub.

An overflow assembly for a bathtub includes an elbow having a first threaded section and a retainer nut having a second corresponding threaded section. The retainer nut is configured to threadably mount onto the elbow. The overflow assembly further includes an overflow cover including at least one overflow opening and at least one vent opening defined therein. The overflow cover is configured to engage with the retainer nut and substantially cover the first threaded section and the retainer nut.

An overflow assembly for a bathtub includes an elbow having a first threaded section and a retainer nut having a second corresponding threaded section. The retainer nut is configured to threadably mount onto the elbow. The overflow assembly further includes an overflow cover including at least one overflow opening and at least one vent opening defined therein. The overflow cover is configured to engage with the retainer nut and substantially cover the first threaded section and the retainer nut.

A drain arrangement that comprises a drain valve housing which has a first channel section with an inlet opening, a second channel section with an outlet opening, and a valve seat situated between the inlet opening and the outlet opening. There also is a valve body, an actuating unit by way of which the valve body is movable, and an outflow pipe into which the second channel section opens by way of the outlet opening thereof. A first central axis extends centrally through the first channel section, and an outflow pipe central axis extends centrally through the outflow pipe. The outflow pipe central axis intersects the first central axis, and the drain arrangement furthermore comprises an overflow unit, which has a first connecting pipe, an overflow pipe and a second connecting pipe.

A drain arrangement that comprises a drain valve housing which has a first channel section with an inlet opening, a second channel section with an outlet opening, and a valve seat situated between the inlet opening and the outlet opening. There also is a valve body, an actuating unit by way of which the valve body is movable, and an outflow pipe into which the second channel section opens by way of the outlet opening thereof. A first central axis extends centrally through the first channel section, and an outflow pipe central axis extends centrally through the outflow pipe. The outflow pipe central axis intersects the first central axis, and the drain arrangement furthermore comprises an overflow unit, which has a first connecting pipe, an overflow pipe and a second connecting pipe.

A method and apparatus for monitoring a water level in a basin are disclosed. An automatic refill system includes a level sensor coupled to a refill valve system. The refill valve system has a valve driven by an actuator. The actuator receives a signal from a controller in response to a measured water level. The refill valve system flows water into a basin from a water source until a desired level is reached.