How is an assembly approved?

An approved backflow prevention assembly has gone through an approval process at the Foundation for Hydraulic Research and Cross-Connection Control at the University of Southern California. This is a two-step process of laboratory tests and a twelve-month field test. Only assemblies successfully completing the entire testing procedure are recognized by the City of Lynchburg as approved backflow prevention assemblies.

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1. What is backflow?
2. What is back-siphonage?
3. What is backpressure?
4. What is a backflow prevention assembly?
5. What assemblies are approved for installation in the City of Lynchburg?
6. How do I know if I need a backflow prevention assembly?
7. Where should a backflow prevention assembly be located?
8. How is an assembly approved?
9. Why do backflow prevention assemblies have to be in a heated enclosure?
10. Why do backflow prevention assemblies have to be tested periodically?
11. What if my backflow prevention assembly is leaking?
12. Who is responsible for the testing and maintenance of the backflow prevention assembly?
13. Who should I contact for more information?