Patent ID: 7686031

Claim:
A water security system for protecting a water supply from contamination being inserted into a fire hydrant, the water security system comprising: a hydrant shoe defining a cavity providing a fluid communication path between the water supply and the fire hydrant, wherein the cavity includes a first section configured to direct a flow of water parallel with a first axis, a second section configured to direct a flow of water parallel with a second axis and a third section configured to direct a flow of water parallel with a third axis, and wherein further the second axis is inclined relative to the first axis, wherein the second section defines a seat having an axis inclined relative to the first axis; and a flapper device configured to cooperate with the seat such that the flapper device is spaced apart from the seat in response to the flow of water from the water supply to the hydrant and further configured to contact the seat in response to the flow of water from the hydrant to the water supply to prevent contamination from entering the water supply from the fire hydrant.