BAT Troubleshooting & Diagnostics 3

Question 1

A spill-resistant pressure vacuum breaker (SRPVB) is being tested and the check valve holds 1.0 psi but the air inlet valve opens at 3.0 psi differential. What is the test result?

Accepted Answer

Fail — the air inlet valve must open at no more than 1.0 psi differential

Answer

The air inlet valve of a SRPVB must open at no more than 1.0 psi differential; opening at 3.0 psi indicates failure.

Question 2

After completing an RPBA test, the tester reopens the downstream shutoff and hears the relief valve briefly discharge water. What does this indicate?

Accepted Answer

Normal operation as the assembly re-pressurizes

Answer

A brief discharge when the downstream shutoff is reopened is normal as the assembly adjusts to the restored downstream pressure and the relief valve briefly sees zone pressure equalization.

Question 3

A tester is evaluating an RPBA where the relief valve opens at a differential of 1.5 psi below supply pressure. What should be recorded?

Accepted Answer

Pass — relief valve opened

Answer

The relief valve must open at a differential of 2.0 psi or less below supply pressure; a reading of 1.5 psi meets this criterion and the assembly passes this portion of the test.

Question 4

During a DCVA test, after closing the downstream shutoff and opening TC #4, the gauge needle slowly rises. What condition does this indicate?

Accepted Answer

The #2 check valve is leaking under backpressure

Answer

A slowly rising pressure at TC #4 after isolating the downstream side indicates the #2 check valve is leaking, allowing downstream pressure to equalize with zone pressure.

Question 5

A tester is unable to get a stable reading on an RPBA because the building's boiler keeps cycling. What is the most appropriate response?

Accepted Answer

Coordinate with the building owner to disable the boiler temporarily during testing

Answer

Coordinating with the building owner to temporarily disable cycling equipment during testing ensures stable conditions and accurate results without unauthorized intervention.

(BAT) Backflow Assembly Tester Certification Practice Test

(BAT) Backflow Assembly Tester Certification Practice Test

BAT Troubleshooting & Diagnostics 3