| 摘要 |
A system that prevents the backflow of fluid is disclosed. The system comprises a housing, two rubber flaps that are attached in such a way to create a one-way valve, and a water sensor. The flaps are anchored to the inside of the housing and open due to the force of fluid flowing in one direction. Fluid flowing in the opposite direction presses the ends of the flaps against each other, thus closing the valve and preventing water from backflowing through the system. A water sensor, mounted within the housing, is activated when a backflow fills the housing, thus providing an alarm to indicate a backflow event has occurred.
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