BAT Backflow Assembly Tester Prevention Methods 2

Question 1

Which backflow prevention assembly is the ONLY type approved for use on high-hazard connections to the potable water supply?

Accepted Answer

Reduced pressure principle assembly

Answer

Double check valve assembly

Answer

Pressure vacuum breaker

Answer

Atmospheric vacuum breaker

Question 2

During a field test of a double check valve assembly, the tester finds that check valve #1 holds at 3.0 psi and check valve #2 holds at 2.5 psi. What is the correct interpretation?

Accepted Answer

The assembly passes because both checks hold above 1.0 psi

Answer

The assembly fails because check #1 must hold at least 5.0 psi

Answer

The assembly fails because check #2 must hold at least 3.0 psi

Answer

The assembly passes only if the static line pressure is above 25 psi

Question 3

A pressure vacuum breaker (PVB) is installed 6 inches above the highest downstream outlet. Why is this installation non-compliant?

Accepted Answer

PVBs must be installed at least 12 inches above the highest downstream outlet

Answer

PVBs must be installed at least 6 inches below the highest outlet

Answer

PVBs are not approved for use outdoors

Answer

The PVB canister must face horizontally, not vertically

Question 4

What condition causes the relief valve of an RP assembly to open during normal system operation?

Accepted Answer

The differential pressure across check #1 falls below 2 psi

Answer

Supply pressure exceeds 80 psi

Answer

Downstream demand drops to zero

Answer

The air-inlet valve fails open

Question 5

An atmospheric vacuum breaker (AVB) is being tested in the field. Which statement about field testing AVBs is correct?

Accepted Answer

AVBs are not field testable and rely on visual inspection only

Answer

AVBs must be field tested annually using a differential pressure gauge

Answer

AVBs are field tested by applying backpressure and reading the gauge

Answer

AVBs are tested by measuring the outlet pressure under flowing conditions

Question 6

When performing an RP assembly test, a tester notices the relief valve is dripping slightly during the No. 1 check test. What does this indicate?

Accepted Answer

The relief valve is functioning correctly — it opens when differential pressure drops below 2 psi

Answer

Check valve #2 has failed and needs replacement

Answer

The supply pressure is too high for the assembly

Answer

The No. 2 shutoff valve was left partially open

Question 7

Which of the following backflow assemblies contains an internal air-inlet port that opens to atmosphere during backsiphonage conditions?

Accepted Answer

Pressure vacuum breaker

Answer

Reduced pressure principle assembly

Answer

Double check valve assembly

Answer

Double check detector assembly