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US 8,474,476 B2Granted
Sanitary hydrant
AssigneeWCM Industries, Inc.
InventorsWilliam T. Ball, Eric Pilarczyk, Cody Jackson
Life of this patent
Estimating the term…
Abstract
A freeze resistant sanitary hydrant is provided that employs a reservoir for storage of fluid under the frost line or in an area not prone to freezing. To evacuate this reservoir, a venturi is provided that is able to function in hydrant systems that employ a vacuum breaker.
Claims9
A sanitary hydrant, comprising:
- a standpipe having a first end and a second end;
- a head for delivering fluid interconnected to said first end of said standpipe;
- a fluid reservoir associated with said second end of said standpipe;
- a venturi positioned within said reservoir and interconnected to said second end of said standpipe, said venturi comprised of a first end, which is interconnected to said standpipe, and a second end associated with a fluid inlet valve with a throat between said first end and said second end of said venturi;
- a bypass tube having a first end interconnected to a location adjacent to said first end of said venturi and a second end interconnected to a bypass valve, said bypass valve also associated with said second end of said venturi,
- wherein when said bypass valve is opened, fluid flows from said inlet valve, through said bypass tube, through said standpipe, and out said hydrant head;
- and
- wherein when said bypass valve is closed, fluid flows through said venturi, thereby creating a pressure drop adjacent to said throat that communicates with said reservoir to draw fluid therefrom.
5 more elements
A method of evacuating a sanitary hydrant, comprising:
- providing a standpipe having a first end and a second end;
- providing a head for delivering fluid interconnected to said first end of said standpipe;
- providing a fluid reservoir associated with said second end of said standpipe;
- providing a venturi positioned within said reservoir and interconnected to said second end of said standpipe, said venturi comprised of a first end, which is interconnected to said standpipe, and a second end associated with a fluid inlet valve with a throat between said first end and said second end of said venturi;
- providing a bypass tube having a first end interconnected to a location adjacent to said first end of said venturi and a second end interconnected to a bypass valve, said bypass valve also associated with said second end of said venturi, wherein when said bypass valve is opened, fluid flows from said inlet valve, through said bypass tube, through said standpipe, and out said hydrant head;
- and wherein when said bypass valve is closed, fluid flows through said venturi, thereby creating a pressure drop adjacent to said throat that communicates with said reservoir to draw fluid therefrom;
- initiating fluid flow through said head by actuating a handle associated therewith;
- actuating a bypass button that opens the bypass valve such that fluid is precluded from entering said venturi;
- actuating said bypass button to close said bypass valve;
- flowing fluid through said venturi;
- evacuating said reservoir;
- ceasing fluid flow through said hydrant;
- and
- draining fluid into said reservoir.
11 more elements
Dependencies are inferred from the claim text.