A shower floor former assembly is provided which comprises a shower floor former having a non-circular waste-plate receiver and a drain waste plate which is dimensioned to be receivable in the waste-plate receiver. A centre point of the waste-plate receiver is offset from a centre point of the shower floor former, and the drain waste plate has a drainage aperture therethrough, a centre point of the drainage aperture being offset from a centre point of the drain waste plate. The drain waste plate is receivable in the waste-plate receiver in a first condition in which the centre point of the drainage aperture is offset relative to the centre point of the shower floor former. The drain waste plate is also receivable in the waste-plate receiver in a second condition in which the centre point of the drainage aperture is coincident with the centre point of the shower floor former.

A shower floor former assembly is provided which comprises a shower floor former having a non-circular waste-plate receiver and a drain waste plate which is dimensioned to be receivable in the waste-plate receiver. A centre point of the waste-plate receiver is offset from a centre point of the shower floor former, and the drain waste plate has a drainage aperture therethrough, a centre point of the drainage aperture being offset from a centre point of the drain waste plate. The drain waste plate is receivable in the waste-plate receiver in a first condition in which the centre point of the drainage aperture is offset relative to the centre point of the shower floor former. The drain waste plate is also receivable in the waste-plate receiver in a second condition in which the centre point of the drainage aperture is coincident with the centre point of the shower floor former.

Disclosed is a method for water saving by retrofitting an institutional plumbing fixture having a combination of an integral lavatory basin and a toilet bowel integrally attached thereto by inserting into the fixture a urinal-type collection receptacle having a water inlet opening on its top side and a water outlet opening on its bottom side; and fluidly interposing the receptacle via the inlet and outlet openings between the lavatory drain pipe and the drain trap provided for the plumbing fixture. Also disclosed is an institutional plumbing fixture retrofit for water saving, and a retrofit urinal-type receptacle.

Disclosed is a method for water saving by retrofitting an institutional plumbing fixture having a combination of an integral lavatory basin and a toilet bowel integrally attached thereto by inserting into the fixture a urinal-type collection receptacle having a water inlet opening on its top side and a water outlet opening on its bottom side; and fluidly interposing the receptacle via the inlet and outlet openings between the lavatory drain pipe and the drain trap provided for the plumbing fixture. Also disclosed is an institutional plumbing fixture retrofit for water saving, and a retrofit urinal-type receptacle.

A seal for a plumbing fitting includes two or more respective apertured sealing portions. Each apertured sealing portion independently includes one or more edge portions enclosing an aperture therebetween. The apertured portions are integrally formed.

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 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.

A bathtub/shower arrangement (1) having a bathtub (2), a bathtub inlet (3), a shower head (4) and a switchover valve (5), by way of which switchover valve a water flow (6) is able to be switched between the bathtub inlet (3) and the shower head (4). The bathtub inlet (3) is arranged above the bathtub (2) at a first distance (7) from an upper edge (9) of the bathtub (2), and the shower head (4) is arranged at a second distance (8) above the bathtub (2) from the upper edge (9) of the bathtub (2), at least the first distance (7) is greater than the height (11) of a side wall (10) of the bathtub (2).

A bathtub/shower arrangement (1) having a bathtub (2), a bathtub inlet (3), a shower head (4) and a switchover valve (5), by way of which switchover valve a water flow (6) is able to be switched between the bathtub inlet (3) and the shower head (4). The bathtub inlet (3) is arranged above the bathtub (2) at a first distance (7) from an upper edge (9) of the bathtub (2), and the shower head (4) is arranged at a second distance (8) above the bathtub (2) from the upper edge (9) of the bathtub (2), at least the first distance (7) is greater than the height (11) of a side wall (10) of the bathtub (2).

Disclosed is a prefabricated modular kit, reversibly assemblable, adapted for the quick installation of a bathroom, including: A) lower module with: toilet bowl; discharge device; roll-holder; container; tiltable door; sprayhead; water connections; discharge duct; B) intermediate module with: sink surface; faucet; mixer; soap dispenser; hands-dryer; C) upper module with: container; foldable arm with showerhead; D) floor module with shower plate; E) ceiling module with light and exhaust fan; F) side wall module; G) door; the modules having the systems ready for connecting between the modules themselves and between the modules and the pre-existing wall.