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Water Distribution | Backflow Prevention

Learn about Distribution System Backflow Prevention in this excerpt from our Distribution Exam Review course.

Air Gap - 0:26
RPZ Backflow Preventer - 1:24
Double Check Valve - 5:51
Vacuum Breakers - 7:00
Atmospheric Vacuum Breaker - 7:37
Pressure Vacuum Breaker - 8:18

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Видео Water Distribution | Backflow Prevention канала American Water College
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28 марта 2018 г. 22:00:01
00:09:17
American Water College
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