| 摘要 |
A hot water distribution system incorporating a pump positioned close to, and between each set of hot and cold water taps to which periodically move the cooled-down water content of the hot water distribution line through the cold water distribution line back to the hot water tank until the total content of the hot water line has a predetermined temperature. The pump is provided with a valve responsive to pump-generated pressure to prevent backflow when the pump is not in use and the pressure in the cold water distribution line is lower than the pressure in the hot water distribution line, such as when water is drawn through a cold water tap.
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