A cool water draining switch valve includes a valve body, a valve spool and a thermal module disposed in the valve body; the valve body has an inlet passage and a first outlet passage and a second outlet passage respectively connected to the inlet passage; the valve body is further disposed with a cool water draining passage connected to the inlet passage; the first outlet passage is connected to the cool water draining passage by a water draining hole, the second outlet passage is connected to the draining passage in unidirectional way by a check valve; a thermal port of the thermal module detects the water temperature of the draining passage, a retractable port of the thermal module opens or closes the water draining hole; when the valve spool is switched to a cool water draining mode, cool water in the inlet passage is drained to the draining passage.

A passive water-and-energy saving washing unit is provided having a first shower sub-assembly and a second shower sub-assembly. The first shower sub-assembly comprises a first water reservoir, for holding a predetermined volume of water for washing at least part of a body, a water heater, for heating water for the first water reservoir, and a shower head, in fluid communication with the first water reservoir for receiving water from the reservoir and providing water spray on the body part. The second shower sub-assembly comprises a second, grey water reservoir, for collecting the sprayed water from the first shower head and running off the body part, a shower head, in fluid communication with the second water reservoir for receiving the water from the reservoir and providing water spray on the body part, and a water pump, for pumping the water from the second water reservoir to the second shower head. A corresponding kit and a method for washing at least part of body with a washing unit are also provided.

This disclosure describes a system for recycling and reusing water from sprinkler systems to water or irrigate a yard or an area of land. The system includes a water reclamation tank that stores water captured from beneath the area of land. When it is time to water the area of land, the sprinkler system draws water from the water reclamation tank. A portion of this water is then recaptured and supplied back to the water reclamation tank for further storage until the next time the sprinkler system is activated. This cyclical process occurs repeatedly and enables a significant reduction in the amount of freshly supplied water used to maintain the area of land.

This disclosure describes a system for recycling and reusing water from sprinkler systems to water or irrigate a yard or an area of land. The system includes a water reclamation tank that stores water captured from beneath the area of land. When it is time to water the area of land, the sprinkler system draws water from the water reclamation tank. A portion of this water is then recaptured and supplied back to the water reclamation tank for further storage until the next time the sprinkler system is activated. This cyclical process occurs repeatedly and enables a significant reduction in the amount of freshly supplied water used to maintain the area of land.

A sanitary device (1), comprising: at least one dispenser (2, 3) for a liquid; a basin (4) having a waste (5) for the liquid, and a first thermostat (6) to which at least part of the liquid discharged via the waste (5) can be supplied as circulating liquid, wherein the first thermostat (6) can be used to mix warm water or cold water to the circulating liquid to form a temperature-controlled circulating liquid, and wherein the temperature-controlled circulating liquid can be supplied to the at least one dispenser (2, 3).

A water control system for the cold and hot water plumbing installations, for consumption or heating and gray water in a home, premises or building increases water and/or energy efficiency of the installation by means of a method of operation which reduces the water consumption or energy used in its consumption and treatment. The method includes detecting and controlling water leaks, avoiding consumption of cold water which is produced while waiting for hot water to come out, reducing the energy required for consuming hot water, reducing consumption of water when it is used for the toilet together with a soap, foam or similar, measuring and controlling the proliferation of Legionella bacteria and other microorganisms, cleaning pipes and in general monitoring the control variables of a plumbing installation and its visualization and interaction by a user or a smart and autonomous IT system.

A water control system for the cold and hot water plumbing installations, for consumption or heating and gray water in a home, premises or building increases water and/or energy efficiency of the installation by means of a method of operation which reduces the water consumption or energy used in its consumption and treatment. The method includes detecting and controlling water leaks, avoiding consumption of cold water which is produced while waiting for hot water to come out, reducing the energy required for consuming hot water, reducing consumption of water when it is used for the toilet together with a soap, foam or similar, measuring and controlling the proliferation of Legionella bacteria and other microorganisms, cleaning pipes and in general monitoring the control variables of a plumbing installation and its visualization and interaction by a user or a smart and autonomous IT system.

Method for operating a water system (10). The water system (10) comprises a fresh water subsystem (11) being configured to provide fresh water to water consumers (13, 14, 15, 16, 17, 19), wherein first water consumers (13, 14) generate black water as waste water, and wherein second water consumers (15, 16, 17, 18, 19) generate grey water as waste water. The water system (10) comprises a waste water subsystem (12) being configured to receive the waste water from the water consumers (13, 14, 15, 16, 17, 19). The waste water sub system (12) comprises a waste water diverter (23) being configured to provide in a black water status of the waste water diverter (23) waste water to a drain (24) thereby treating waste water as black water, and provide in a grey water status of the waste water diverter (23) waste water to a grey water tank (22) thereby treating waste water as grey water. The method comprises the following steps: Detect by a fresh water controller (26) being installed in the fresh water subsystem (11) a fresh water consumption in the fresh water subsystem (11) and provide a respective first output signal to a grey water controller (25). Determine by the grey water controller (25) on basis of the first output signal provided by the fresh water controller (26) a control signal for the waste water diverter (23) to switch the same either into the black water status or into the grey water status.

Method for operating a water system (10). The water system (10) comprises a fresh water subsystem (11) being configured to provide fresh water to water consumers (13, 14, 15, 16, 17, 19), wherein first water consumers (13, 14) generate black water as waste water, and wherein second water consumers (15, 16, 17, 18, 19) generate grey water as waste water. The water system (10) comprises a waste water subsystem (12) being configured to receive the waste water from the water consumers (13, 14, 15, 16, 17, 19). The waste water sub system (12) comprises a waste water diverter (23) being configured to provide in a black water status of the waste water diverter (23) waste water to a drain (24) thereby treating waste water as black water, and provide in a grey water status of the waste water diverter (23) waste water to a grey water tank (22) thereby treating waste water as grey water. The method comprises the following steps: Detect by a fresh water controller (26) being installed in the fresh water subsystem (11) a fresh water consumption in the fresh water subsystem (11) and provide a respective first output signal to a grey water controller (25). Determine by the grey water controller (25) on basis of the first output signal provided by the fresh water controller (26) a control signal for the waste water diverter (23) to switch the same either into the black water status or into the grey water status.

A mobile handwashing system (1) includes a freestanding supply station (2) and at least one freestanding handwashing station (3). The supply station (2) includes a freshwater tank (4), which is fluidly connected or connectable to the at least one handwashing station (3) via a first freshwater supply line (5) and is fluidly connected or connectable to a freshwater supply system via a second freshwater supply line (6). The supply station (2) includes a wastewater or graywater tank (7) and/or a wastewater pump (23) which is fluidly connected or connectable to the at least one handwashing station (3) via a first wastewater line (8) and is fluidly connected or connectable to a wastewater disposal or wastewater treatment system via a second wastewater line (9).