Topical Terminology > Backflow Preventer
Backflow Preventer
For Backflow Preventer we have terms and definitions in 2 topics. The topics are Plumbing and Roofing.
Backflow Preventer (Plumbing) 
A device that prevents wastewater and other contaminants from flowing into the potable water supply. Generally required for sprinkler systems, hand-held showers installed in bathtubs, faucets with pullout spouts, kitchen sprayers, and the like.
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Backflow Preventer (Roofing)
A device or means to prevent backflow into the potable water supply.
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