Backflow Prevention Assembly Tester — Practice Exam
AVB: practice questions
Our Backflow Tester bank has 6 questions on this topic. Here are 3 of them with answers; the full mock exam draws from every topic, like the real one.
Question 1
How high must an AVB be installed above the highest downstream outlet or piping?
- At grade
- At least 6 inches
- At least 12 inches
- At least 1 inch
Show the answer
B. At least 6 inches — Common code requirement.
Question 2
Is an AVB testable with a test kit?
- Yes, with a standard three-valve test kit
- Yes, with a 3-valve kit
- No; it has no test cocks
- Yes, with a 5-valve kit
Show the answer
C. No; it has no test cocks — It is a device, not an assembly.
Question 3
Can an AVB have a shutoff valve downstream of it?
- Only on irrigation systems
- Only if it is brass
- No; it must not be under continuous pressure
- Yes, always, as long as the valve is opened every morning
Show the answer
C. No; it must not be under continuous pressure — Continuous pressure holds the float closed and can damage it.