Backflow

The flow of piped medium in the direction opposite to normal flow is called backflow. It is caused by a difference in water pressures.

The flow of piped medium in the direction opposite to normal flow is called backflow. It is caused by a difference in water pressures.

Backflow is normally prevented by a non-return valve, and sometimes a gooseneck on the pipe system. In the pictured system, only the gooseneck will prevent backflow into the basement.





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