The invention relates to a heat recovery unit to transfer heat from a gray water source discharged from a bath or a shower to preheat fresh cold water supplying a bath, a shower, a boiler system or hot water heater. The heat recovery unit comprises an inner tube, an outer tube, a non-return valve, an anode, deflectors as well as associated piping and fittings. Fresh water from a pressurized public network or well flows through the inner tube while the gray water flows between the inner and outer tubes. The non-return valve installed in the fresh water pipe prevents contamination of the drinking water system. A translucent pipe may be installed in a section of the gray water piping system to detect any leaks. An insulated jacket may be placed around the unit to reduce heat loss. The heat recovery unit may be used in domestic, commercial, industrial and institutional buildings.

An apparatus for dispensing a mixture of a diluent and an additive for sanitation, cosmetic or cleaning applications. The apparatus includes a mixing unit for creating a mixture of the diluent and the additive, a diluent supply supplying the diluent to the mixing unit, an additive supply supplying the additive to the mixing unit, an outlet for dispensing the mixture. The diluent supply includes a pump arranged to increase the pressure of the diluent before the diluent enters the mixing unit.

The present inventive concept relates to a method for adjusting a water temperature in a water recirculating device. The method comprises determining a first parameter associated with a first water path; determining a second parameter associated with a second water path; determining a setting of a mixing valve arrangement based on the first and second parameter; and adjusting a water temperature of water output by a water outlet based on the setting of the mixing valve arrangement. The invention also relates to a water recirculating device configured to adjust a water temperature of water output by a water outlet based on the setting of the mixing valve arrangement.

The present inventive concept relates to a water recirculating device (100) comprising: a heating arrangement (120); and a flow path divider (122) placed in a water recirculating path (116) upstream from the heating arrangement (120), wherein the flow path divider (122) is arranged to divide the water recirculating path (116) into a heating path (124) and a non-heating path (126); and wherein a first mixing valve (106) is configured to mix water from the heating path (124) having a first temperature and water from the non-heating path (126) having a second temperature in order to form first temperature regulated water, and wherein a second mixing valve (112) is configured to mix water from the heating path (124) having the first temperature with water from the non-heating path (126) having the second temperature in order to form second temperature regulated water.

The present inventive concept relates to a system (100) comprising: a water recirculating device comprising: a heating arrangement (112) arranged in a recirculating path (108); a mixing valve arrangement (122) in liquid communication with an external ON water path arrangement (114), said mixing valve arrangement (122) accepting as inputs hot and cold water from a hot and cold water source respectively, said mixing valve arrangement (122) being configured to form temperature regulated water (120) by combining said hot and cold water, said mixing valve arrangement (122) comprising a user input interface configured to control a proportion of said hot and cold water directed to said external water path arrangement (114); and a reference temperature determining arrangement (130) configured to determine a reference water temperature of said temperature regulated water (120); wherein said heating arrangement (112) is configured to adjust a water temperature of treated water towards said reference water temperature.

The invention relates to a heat recovery unit to transfer heat from a gray water source discharged from a bath or a shower to preheat fresh cold water supplying a bath, a shower, a boiler system or hot water heater. The heat recovery unit comprises an inner tube, an outer tube, a non-return valve, an anode, as well as associated piping and fittings. Fresh water from a pressurized public network or well flows through the inner tube while the gray water flows between the inner and outer tubes. The non-return valve installed in the fresh water pipe prevents contamination of the drinking water system. A translucent pipe may be installed in a section of the gray water piping system to detect any leaks. An insulated jacket may be placed around the unit to reduce heat loss. The heat recovery unit may be used in domestic, commercial, industrial and institutional buildings.

A grey water heat recovery apparatus has first and second passes arranged in counter-flow orientation. It has a hot side for grey water, and a cold side for fresh water supplied under pressure. It extracts heat from the grey water drains of a building. The fresh water is carried in tubing modules in series immersed in a grey water sump in a cylindrical plastic or stainless steel pipe. The coils have a return leg such that both ends of the fresh water coil are carried out through the same upper end pipe closure, without a pressurized line wall penetration in the walls of the pipe. There is a non-electrically conductive barrier between the fresh water and grey water flow paths. The apparatus has a leak detection circuit and co-operable bypass valves. The entire assembly may be enclosed in a unitary external housing with easily accessible connection fittings.

A lavatory for a vehicle includes a housing that is accessible through an access opening, and a washing apparatus for washing feet. The washing apparatus includes a water supply device and a water removal device. The washing apparatus also includes a depression, with which the water removal device is couplable and which is positionable underneath the water supply device. The depression has a use height, which is 700 mm at a maximum.

A flush-mounted built-in body for a sanitary fitting, having at least one valve for a liquid having a rotatable flow regulator and a threaded shaft, wherein the threaded shaft can be actuated for opening and closing the at least one valve in an axial direction of the at least one valve, having at least one push button for actuating the threaded shaft of the at least one valve in the axial direction, wherein the at least one push button comprises an intermediate part, screwable with the threaded shaft, for setting the at least one push button in the desired position in the axial direction and a cover cap that can be connected nonrotatably to the threaded shaft for securing the intermediate part in the desired position, and having at least one rotating knob for adjusting a flow rate of the liquid.

The invention relates to a heat recovery unit to transfer heat from a gray water source discharged from a bath or a shower to preheat fresh cold water supplying a bath, a shower, a boiler system or hot water heater. The heat recovery unit comprises an inner tube, an outer tube, a non-return valve, an anode, as well as associated piping and fittings. Fresh water from a pressurized public network or well flows through the inner tube while the gray water flows between the inner and outer tubes. The non-return valve installed in the fresh water pipe prevents contamination of the drinking water system. A translucent pipe may be installed in a section of the gray water piping system to detect any leaks. An insulated jacket may be placed around the unit to reduce heat loss. The heat recovery unit may be used in domestic, commercial, industrial and institutional buildings.