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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Негізгі бет Water Distribution | Backflow Prevention
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