BACKFLOW PREVENTION ASSEMBLY

BACKFLOW PREVENTION ASSEMBLY

TESTER CERTIFICATION EXAM 2025 -

LATEST ACTUAL EXAM QUESTIONS AND

CORRECT DETAILED ANSWERS (VERIFIED

ANSWERS) |ALREADY GRADED A+

To avoid creating water hammer, when returning a backflow prevention assembly to service the tester should

• Slowly pressurize the assembly and then slowly pressurize the

downstream piping

• Slowly pressurize the downstream piping and then slowly

pressurize the assembly

• Close shut-off valve #2 after opening shut-off valve #1
• Close shut-off valve #1 after opening shut-off valve #2 Correct

Answer A

In a backsiphonage condition, the check valves of a double check assembly will be

• 1st check closed and 2nd check open
• 1st check open and 2nd check closed
• 1st check open and 2nd check open
• 1st check closed and 2nd check closed Correct Answer D

How many test cocks must an approved double check valve assembly have?

• 3
• 4
• 5
• 8 Correct Answer B

A leaking check valve #2 of a reduced pressure assembly and backpressure may cause 1 / 3

• Pressure regulator damage
• Disc compression
• Relief valve discharge
• Check valve #1 to open Correct Answer C

What could be the problem if the relief valve of a reduced pressure assembly discharges intermittently?

• Shut-off valve #1 is closed with backpressure
• Shut-off valve #1 is open with backpressure
• Large pressure fluctuations
• Assembly is improperly sized Correct Answer C

Which of the following backflow assemblies contains an independently operating internally loaded check valve and an independently operating loaded air inlet valve located on the discharge side of the check?

• Atmospheric vacuum breaker
• Double check valve assembly
• Pressure vacuum breaker assembly
• Reduced pressure backflow assembly Correct Answer C

Which of the following backflow assemblies is allowable for use against a contaminant when the backflow could be caused by backpressure?

• Atmospheric vacuum breaker
• Double check valve assembly
• Pressure vacuum breaker assembly
• Reduced pressure backflow assembly Correct Answer D

While testing check valve #2 of a reduced pressure backflow assembly under backpressure, what would be observed if the second check valve was fouled? (positive differential does not mean it passes)

• No differential (0 psi)on the test kit and no discharge from the

relief valve 2 / 3

• No differential (0 psi) on the test kit and discharge from the

relief valve

• Differential (±5 psi) on the test kit and no discharge from the

relief valve

• Differential (±5 psi)on the test kit and discharge from the relief

valve Correct Answer D - failed check valves cause water to flow to buffer zone and push the relief open, the reading can be positive but still under 5 and fail

What could be determined while testing check valve #1 of a double check valve assembly if the gauge reads 0.7 psid?

• Check valve #1 is defective
• Check valve #2 is defective
• Shut-off valve #1 is leaking
• Shut-off valve #2 is leaking Correct Answer A

What could a tester determine if water is observed flowing from the air inlet of the pressure vacuum breaker prior to starting the test? (assuming proper installation)

• Shut-off valve #1 is open or leaking
• Shut-off valve #2 is open or leaking with backpressure
• Air inlet valve is defective
• Check valve is leaking Correct Answer C

What may be determined when testing the air inlet valve of an approved pressure vacuum breaker if the air inlet valve is observed to open after closing shut-off valve #1?

• Air inlet valve is defective
• Shut-off valve #1 is leaking
• Shut-off valve #2 is leaking with flow downstream
• Shut-off valve #2 is leaking with backpressure Correct Answer

C

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