FREE Association of Boards of Certification Backflow Prevention Assembly Questions and Answers

Question 1

What is the pressure at the base of a 100 foot high standpipe filled with water?

Accepted Answer

43.3 psi

Answer

0.433 psi

Answer

2.31 psi

Answer

14.7 psi

Question 2

A check valve in an approved backflow assembly must be...

Accepted Answer

Resilient seated and loaded to the closed position

Answer

Resilient seated and loaded to the open position

Answer

Hard seated and loaded to the open position

Answer

Hard seated and loaded to the closed position

Question 3

What are two types of backflow conditions?

Accepted Answer

Backpressure and backsiphonage

Answer

Backsiphonage and capillary action

Answer

Isolation and containment

Answer

Potable and non-potable

Question 4

A leaking check valve #2 of a reduced pressure assembly and backpressure may cause...

Accepted Answer

Relief valve discharge

Answer

Pressure regulator damage

Answer

Check valve #1 to open

Answer

Disc compression

Question 5

While testing check valve #2 of a reduced pressure backflow assembly under backpressure, what would
be observed if the second check valve was fouled?

Accepted Answer

Differential on the test kit and discharge from the relief valve

Answer

Differential on the test kit and no discharge from the relief valve

Answer

No differential on the test kit and discharge from the relief valve

Answer

No differential on the test kit and no discharge from the relief valv