Why do backflow prevention assemblies have to be tested periodically?

Mechanical backflow prevention assemblies have internal seals, springs, and moving parts that are subject to fouling, wear or fatigue. All backflow prevention assemblies have to be tested periodically to ensure that they are functioning properly. A certified tester with properly calibrated gauge equipment would perform this test.

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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?