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US 2009/0000666 A1Published application
Anchor Valve for Security
AssigneeMueller International, LLC
InventorNicholaus J. Peyton
Life of this patent
Estimating the term…
Abstract
An anchor valve for security is disclosed. The anchor valve includes a check valve with a flapper for preventing a contaminant from entering the fluid supply system. Contaminants that are outboard of the anchor valve are unable to pass by and are expelled when the fluid supply valve is opened. The anchor valve may include an access cover for maintenance and inspection of the flapper and the check valve.
Claims22
An anchor valve for protecting a fluid supply from a contaminant, comprising:
- a section of pipe having an inlet end and exit end;
- and
- a backflow prevention assembly including a flapper in communication with a sealing surface, wherein fluid can flow through the section of pipe from the inlet end to the exit end but is prevented from flowing through the section of pipe from the exit end to the inlet end;
- wherein the anchor valve is adapted to be coupled to piping within a fluid delivery system.
1 more element
A method of preventing a contaminant from entering a fluid source, comprising the steps of:
- drawing a desired amount of fluid from the fluid source through a series of pipes, including an anchor valve;
- maintaining a remaining portion of the fluid on the exit side of the anchor valve after the desired amount of fluid is withdrawn from the fluid source;
- preventing the remaining portion of fluid from reentering the fluid source via the anchor valve, thereby preventing a contaminant from entering the fluid source;
- and
- expelling the remaining portion of fluid and contaminant from the series of pipes upon a further withdrawal of fluid from the fluid source.
2 more elements
Dependencies are inferred from the claim text.