Disclosed herein is a two-layer vanity unit. The two-layer vanity unit includes: a cabinet; an upper vanity unit disposed on a top of the cabinet and exposed to the outside; a lower vanity unit disposed inside the cabinet so that it is selectively put into the cabinet when not in use and withdrawn from the cabinet when in use; drain pipes connected to the upper and lower vanity units; and cold and hot water pipes connected to the upper vanity unit. Control is performed to adjust one or more of water supply and water cutoff for the upper or lower vanity unit and an amount and temperature of the available water according to an operation mode of the lever of the faucet provided on the upper or lower vanity unit, thereby controlling a type of supply of available water.

Disclosed is a sanitary ware compatibly satisfying both low water absorption and weight reduction. The sanitary ware has a pottery substrate of a vitreous body and a glaze layer, in which part of the substrate is exposed to outside thereof without the glaze layer; the substrate has (A) an anorthite and (B) an alkali metal component; and an amount of the alkali metal component is in the range of 5 to 10% by weight in terms of an oxide conversion (A.sub.2O) relative to the substrate. This sanitary ware has the properties of low water absorption and light weight.

A method for manufacturing an approximately parallelepiped-shaped sink comprising a series of flat rectangular slabs made of ceramic/clay material, firmly connected to one another at their relative sides. the sides of the slabs are provided with connection bevels tilted in respect to the lying planes of the respective slabs with angles sized so that the support of the flat face of a connection bevel present on a side of a slab against the flat face of the connection bevel present on a connection side of another slab, determines a mutual perpendicular positioning between the two slabs; and firmly fixing the flat faces of the connection bevel by means of an adhesive composition.

A method for manufacturing an approximately parallelepiped-shaped sink comprising a series of flat rectangular slabs made of ceramic/clay material, firmly connected to one another at their relative sides. the sides of the slabs are provided with connection bevels tilted in respect to the lying planes of the respective slabs with angles sized so that the support of the flat face of a connection bevel present on a side of a slab against the flat face of the connection bevel present on a connection side of another slab, determines a mutual perpendicular positioning between the two slabs; and firmly fixing the flat faces of the connection bevel by means of an adhesive composition.

A dimensionally adjustable washbasin system is provided with an upwardly open liquid collecting unit that is at least partially uncovered and in liquid communication with a drainage system; and a washbasin having at least one liquid receiving portion and a liquid discharging portion, such that liquid introduced onto one of the liquid receiving portions is flowable into the liquid collecting unit when the liquid discharging portion is positioned above, and in communication with, the liquid collecting unit.

A dimensionally adjustable washbasin system is provided with an upwardly open liquid collecting unit that is at least partially uncovered and in liquid communication with a drainage system; and a washbasin having at least one liquid receiving portion and a liquid discharging portion, such that liquid introduced onto one of the liquid receiving portions is flowable into the liquid collecting unit when the liquid discharging portion is positioned above, and in communication with, the liquid collecting unit.

A dimensionally adjustable washbasin system is provided with an upwardly open liquid collecting unit that is at least partially uncovered and in liquid communication with a drainage system; and a washbasin having at least one liquid receiving portion and a liquid discharging portion, such that liquid introduced onto one of the liquid receiving portions is flowable into the liquid collecting unit when the liquid discharging portion is positioned above, and in communication with, the liquid collecting unit.

A dimensionally adjustable washbasin system is provided with an upwardly open liquid collecting unit that is at least partially uncovered and in liquid communication with a drainage system; and a washbasin having at least one liquid receiving portion and a liquid discharging portion, such that liquid introduced onto one of the liquid receiving portions is flowable into the liquid collecting unit when the liquid discharging portion is positioned above, and in communication with, the liquid collecting unit.

A lavatory drain system is disclosed. The basin, containing a U-shaped drain channel, employs one of two draining embodiments. In the first, a drain plate divides the drain channel into two chambers, allowing for fluid communication between them through openings in the drain plate. In another embodiment, the drain channel forms the upper chamber while a pipe disposed below the channel serves as a lower chamber for fluid to flow to the drain. Further, the drain cap of the claimed system is configured to direct air about the basin. One embodiment utilizes a ridge protruding over one of the basin's sides to captures air and directs it to a return duct. In the other embodiment, a series of louvres located in an opening are used to filter water and debris from the air before it returns to the fan.

A lavatory drain system is disclosed. The basin, containing a U-shaped drain channel, employs one of two draining embodiments. In the first, a drain plate divides the drain channel into two chambers, allowing for fluid communication between them through openings in the drain plate. In another embodiment, the drain channel forms the upper chamber while a pipe disposed below the channel serves as a lower chamber for fluid to flow to the drain. Further, the drain cap of the claimed system is configured to direct air about the basin. One embodiment utilizes a ridge protruding over one of the basin's sides to captures air and directs it to a return duct. In the other embodiment, a series of louvres located in an opening are used to filter water and debris from the air before it returns to the fan.