Importance

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Abstract

Three storage vessels 11-13 are stacked at positioned lower than a rainwater gutter 14. The rainwater gutter and the first storage vessel 11 are connected by a first supply passage 21, the second supply passage 22 connected to a lower face of the first storage vessel at one end thereof is provided with a supply valve 33 at the other end thereof. The third supply passage 23 provided with a nonreturn valve 43 is connected with a lower face of second and third storage vessels 12, 13 at one end thereof, and connected to a second supply passage at the other end thereof respectively. When the rainwaters stored in the first and second storage vessels go up in the water level up to over a predetermined water level, an overflow passage 41 leads the rainwater exceeding over the predetermined water level to the second and third storage vessels respectively. The rainwater is collected in the storage vessels in order from the first storage vessel, and the rainwater is supplied to the destination of supply from the first storage vessel. The general service water storing equipment can be installed in a relatively narrow space, and can increase and decrease the water storage capacity relatively easily by increasing and decreasing the number of the storage vessels, and further can supply the stored rainwater to the required place as the general service water without a pump by utilizing the potential energy of the rainwater of the storage vessel.

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First Claim