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How a backflow prevention valve works
0:36
YouTubeStAugustineRecord
How a backflow prevention valve works
CONTRIBUTED A video from WAPRO Inc shows how a backflow prevention valve works. The city of St. Augustine is planning to install these types of valves in Davis Shores, including valves from Tideflex. http://bit.ly/2ybt7JK http://bit.ly/2wO9Ydc
76.4K viewsOct 11, 2017
Backflow Testing Tutorial
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12:10
Backflow Preventers 101: Double Check vs RPZ
YouTubeDavid Butler - Serving Up
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YouTubeAmerican Water College
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Backflow Prevention Assemblies - What are Backflow preventers, how they work, how to test them
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Backflow Prevention Assemblies - What are Backflow preventers, how they work, how to test them
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