| 主权项 |
1. A hydrant, comprising:
a pipe having a first end and a second end; a head for delivering fluid interconnected to said first end of said pipe; a fluid reservoir associated with said second end of said pipe; a means for altering pressure positioned within said reservoir and interconnected to said second end of said pipe, said means for altering pressure comprised of a first end, which is interconnected to said pipe, and a second end associated with a fluid inlet valve with a throat between said first end and said second end of said means for altering pressure; a bypass tube having a first end interconnected to a location adjacent to said first end of said means for altering pressure and a second end interconnected to a bypass valve, said bypass valve also associated with said second end of said means for altering pressure; wherein when said bypass valve is opened, fluid flows from said inlet valve, through said bypass tube, through said pipe, and out said hydrant head; and wherein when said bypass valve is closed, fluid flows through said means for altering pressure, thereby creating a pressure drop adjacent to said throat that communicates with said reservoir to draw fluid therefrom. |
