What is a Backflow Preventer (BFP)?
A BFP is a device designed to prevent reverse flow in a water system. It is used to protect water supplies from contamination or pollution. Many types of backflow prevention devices also have test ports so that they can be tested or examined to ensure that they are functioning properly. Backflow devices are required by law where needed and must be installed in accordance with plumbing code. The assembly is installed on the water service or within the plumbing system.

What is Backflow?
Backflow is a reverse flow in a water system from the normal or intended direction, caused by:
? A decrease or loss of pressure on the main supply lines that allows a reverse flow of water from a Consumer

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