How Often Must a Backflow Preventer Be Tested?

Backflow preventers - ConnellyPlumbingSolutions.com

What is a backflow preventer and how do I know if I need testing? Backflow occurs if there is a change in pressure at a cross-connection that allows non-potable water to mix with potable water. A backflow prevention assembly ensures water flows in the correct direction. Knowing the importance of the backflow leads to the…

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