A drinking water supply system includes a drinking water line system, a plurality of drinking water withdrawal points connected to the drinking water line system, at least one sensor which is designed to determine measuring values, and a central control device which is designed to receive and evaluate the measuring values determined by the at least one sensor. The system also includes a presence detector designed to determine information about the presence of a person, or an acoustic sensor designed to measure measuring values for the volume. The central control device is designed to control the drinking water supply system as a function of the information about the presence of a person or as a function of the measured values for the volume. A method for controlling such a drinking water supply system and a computer program that causes the method to be carried out are also provided.

A water control system including a showerhead and a tub faucet. The faucet has a valve configured to automatically restrict fluid flow through the faucet and direct fluid to the showerhead as a function of a parameter, such as a predetermined water temperature. The faucet has many modes of operation, including a Reset Mode, an Auto-Divert Mode, a Bypass Mode, and a Cold Mode. A flow control device generates minimal back-pressure when in the Reset Mode such that water does not undesirably back flow to a shower head.

The invention relates to a method for operating a circulation system comprising a cooling device with an input port and an output port for cooling water. The invention also relates to a circulation system for implementing said method.

A water conservation system includes a showerhead, a water conservation tank, and a sensor. The system further includes a first valve configured to direct water towards the conservation water tank in an open position and configured to prevent water from flowing towards the conservation water tank when in a closed position. The system further includes a second valve configured to direct water towards the showerhead in an open position and configured to prevent water from reaching the showerhead in a closed position. A controller is configured to direct the first valve to the open position and the second valve to the closed position upon the detection of water flow by the sensor and the configured to direct the first valve to the closed position and the second valve to open position upon the occurrence of an event that occurs after the initial detection of water flow by the sensor.

A joint connects to a hot water source, a toilet tank of a toilet, and a hot water outlet. A set of pipes connecting the hot water source and the joint may be referred to herein as “main hot water pipes.” Water exiting the hot water source into the main hot water pipes is above a desired water temperature. As time passes, however, water that rests in the main hot water pipes may fall below the desired water temperature. Rather than wasting all of the cooled water resting in the main hot water pipes in order to use hot water at the hot water outlet, at least a portion of the cooled water may be used to refill the toilet tank. Therefore less cooled water exits the hot water outlet before fresh water reaches the hot water outlet.

The present invention provides a cold water discharge structure, which pertains to the technical field of shower equipment. It solves the problem of inconvenient use of existing cold water discharge device. The cold water discharge structure comprises a housing having an inlet and an outlet, a lateral part of the housing has a drainage hole capable of communicating with the inlet; a temperature sensing component is capable of moving under an elasticity effect of the elastic element to block communication between the inlet and the outlet and capable of communicating the inlet with the drainage hole; a temperature sensing component is capable of moving by overcoming an elasticity effect of the elastic element after sensing an increase in a medium temperature to block communication between the inlet and the drainage hole and capable of communicating the inlet with the outlet. The cold water discharge structure improves convenience of use.

A cold water discharge apparatus, for discharging water from an outlet port when feed water is hot and from a cold water discharge port when the feed water is cold, includes a temperature-sensitive first switching valve body and a diaphragm-type second switching valve body. The first switching valve body is configured to open/close a cold water discharge flow channel depending on temperature. The second switching valve body is configured to open a discharge flow channel due to the pressure caused by the flow of hot water through the discharge flow channel. The second switching valve body is configured to close the discharge flow channel due to the pressure caused by the flow of the cold water through the cold water discharge flow channel. The second switching valve body is configured to discharge residual water from the cold water discharge flow channel after stopping water has cooled down.

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 plumbing system for a shower or the like includes a mixing valve operable for delivering a water flow of adjustable temperature from a water source to a dispensing device downstream from the mixing valve. The system further includes a diverter valve between the mixing valve and the dispensing device, and operable to divert a selectively variable portion of the water from the mixing valve back to the water source. A thermochromic thermal indicator, downstream from the mixing valve, may advantageously provide a visible indication of the water flow having achieved a predetermined temperature. The thermal indicator may be a thermochromic PVC conduit, or it may be a fitting having an inlet, an outlet, a thermochromic PVC element therebetween, and a barrier located between the inlet and the outlet so as to define a flow path that includes an interior surface of the thermochromic element.

The invention relates to a drinking water supply system including a drinking water line system, a plurality of drinking water withdrawal points connected to the drinking water line system, at least one sensor which is designed to determine measuring values, a central control device which is designed to receive and evaluate the measuring values determined by the at least one sensor, a plurality of decentralized control elements which are designed to influence at different locations in the drinking water supply system one or more properties of the water guided in the drinking water supply system, wherein the central control device is designed to control the control elements for influencing the one or more properties of the water guided in the drinking water supply system, and wherein a plurality of control elements are or can be combined to form a virtual group.