BAT Backflow Assembly Field Testing Procedures 3

Question 1

After completing a backflow assembly field test, the tester's required actions include:

Accepted Answer

Restore the assembly to full service and submit a completed test report

Answer

Leave the assembly isolated for 24 hours to confirm no pressure loss

Answer

Remove one check valve for bench inspection regardless of test result

Answer

Report only failed assemblies to the authority having jurisdiction

Question 2

How frequently must a differential pressure gauge used for backflow field testing be calibrated?

Accepted Answer

Annually or per the manufacturer's recommendation

Answer

Every 5 years

Answer

Only once at the time of purchase

Answer

Only when the gauge reads obviously incorrectly

Question 3

A Spill-Resistant Vacuum Breaker (SVB) differs from a standard Pressure Vacuum Breaker (PVB) primarily because the SVB:

Accepted Answer

Is designed to withstand backpressure without spilling

Answer

Uses a ball valve instead of a poppet check valve

Answer

Has a second check valve installed downstream

Answer

Operates at higher temperature ratings

Question 4

What is the correct method to verify a test cock is open before attaching test equipment?

Accepted Answer

Confirm the handle is oriented parallel (inline) with the valve body

Answer

Use a pressure gauge on the line to confirm downstream pressure

Answer

Tap the test cock with a wrench to listen for flow

Answer

Verify the assembly has not been shut off upstream

Question 5

When a field test report documents a failed backflow prevention assembly, who must be notified?

Accepted Answer

The local water purveyor or authority having jurisdiction (AHJ)

Answer

Only the property owner or manager

Answer

The nearest plumbing supply distributor

Answer

The original installer of the assembly

Question 6

What condition would cause the check valve on a Pressure Vacuum Breaker (PVB) to fail a field test?

Accepted Answer

The check valve does not hold a minimum 1.0 psi differential pressure

Answer

The check valve holds 2.0 psi differential pressure

Answer

The check valve holds exactly 1.0 psi differential pressure

Answer

The air inlet valve opens at 1.2 psi differential

Question 7

Which set of field test results would cause an RPZ assembly to PASS?

Accepted Answer

CV#1 = 6.0 psi, relief valve opens when zone is 2.5 psi below supply, CV#2 = 1.5 psi

Answer

CV#1 = 4.5 psi, relief valve opens when zone is 3.0 psi below supply, CV#2 = 2.0 psi

Answer

CV#1 = 6.0 psi, relief valve opens when zone is 1.5 psi below supply, CV#2 = 2.0 psi

Answer

CV#1 = 5.0 psi, relief valve fails to open, CV#2 = 1.0 psi