Why do backflow prevention assemblies have to be in a heated enclosure?

A backflow prevention assembly has to be in a heated enclosure because of freezing temperatures and protection against vandalism. RPZs have to be installed above ground because of the relief port and must be heated in the winter to keep the assembly from freezing and failing to function properly.

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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?