Patent ID: 6237629
Filing Date: 2001-05-29
Classification: E03B,Y02A,Y10T

Abstract:
An apparatus for positive water retention and circulation comprising in combination with a single pipe potable water storage tank having a water column extending near ground level and an entrance pipe near a base and ground level of said water storage tank:a pipe coupler having at least three ports placed near said ground level,at least one port of said pipe coupler connected to said entrance pipe; andone or more inlet flow control check valves together with an extension pipe directionally connected to at least one of said pipe coupler ports which are unconnected to said entrance pipe, whereby water flowing into said tank is only able to flow through said one or more inlet flow control check valves and into said tank substantially above the level of said base of said water storage tank; andone or more exiting flow control check valves directionally connected near the base of said tank and said ground level with said ports of said pipe coupler which are unconnected to said entrance pipe or said one or more inlet flow control check valves and extension pipe combination, whereby water flowing out of said tank is able to only flow through said one or more exiting flow control check valves,said exiting flow control check valves in combination of sufficient diameter to allow full exiting fire flow capacity for those served by said tank.