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BACKFLOW PREVENTION ASSEMBLY TESTER EXAM
NEWEST 2024 ACTUAL EXAM COMPLETE 100
QUESTIONS & CORRECT DETAILED
ANSWERS|GRADED A+
A backflow preventer creates a closed plumbing system that requires the installation of
a(n) _____?
A
...
Globe valve
C
...
Temperature and pressure relief valve
E
...
7 m) above the highest ____?
A
...
Fixture outlet
C
...
Service connection
E
...
8 psid (5
...
A passing check valve
B
...
Debris in the check seat
D
...
Low water pressure - ANSDisc softening or decay
A common backflow preventer on a double-wall heat exchanger with leak detection is
____?
A
...
An atmospheric vacuum breaker
C
...
A reduced pressure principle assembly
E
...
Backflow preventer
B
...
OSHA hazardous area designation
D
...
Temporary hose bibb connection - ANSTemporary hose bibb connection
A deck-mounted atmospheric vacuum breaker's critical installation level is above the
outlet usage by ___?

A
...
(2
...
3 in
...
6 cm)
C
...
(15 cm)
D
...
(30 cm)
E
...
(46 cm) - ANS1 in
...
5 cm)
A differential pressure gauge reading of 0
...
1/16 in
...
16 cm)
B
...
(1
...
2 in
...
1 cm)
D
...
5 in
...
9 cm)
E
...
5 in
...
5 in
...
Backpressure or backsiphonage
B
...
Periodic inspection
D
...
Toxic materials - ANSBackpressure or backsiphonage
A double check valve assembly installed in a vertical flow down orientation is only
allowed ______?
A
...
If the assembly was tested and approved as such
C
...
On fire-suppression systems
E
...
(30
...
Electrical code compliance
B
...
Maintenance
D
...
Rodent control - ANSMaintenance
A field test report for a double check valve assembly will include the manufacturer's
name, model, size, and _____?
A
...
Date of manufacture
C
...
Working pressure (maximum)
E
...
An air-gap separation
B
...
A reduced pressure principle assembly
D
...
No protection required - ANSA double check valve assembly
A hose connection vacuum breaker's maintenance includes _____?
A
...
Diaphragm replacement
C
...
Replacement every 2 years
E
...
Atmospheric vacuum breaker
B
...
Pressure vacuum breaker
D
...
Spill-resistant vacuum breaker - ANSAtmospheric vacuum breaker
A low-hazard use only backflow preventer is a(n) _____?
A
...
Atmospheric vacuum breaker
C
...
Pressure vacuum breaker assembly
E
...
Aspiration
B
...
Low turbulence
D
...
Pressure surges - ANSAspiration
A pressure vacuum breaker may have ____ on the assembly's discharge piping
...
Auxiliary water supply looped irrigation
B
...
A booster pump
D
...
Irrigation sprinkler heads - ANSIrrigation sprinkler heads
A properly installed barometric loop will prevent _____?
A
...
Backsiphonage

C
...
Leakage
E
...
Dual check valve
B
...
Double check valve assembly
D
...
Reduced pressure principle assembly - ANSReduced pressure principle assembly
A reduced pressure principle assembly check valve number 1 is field-tested _____?
A
...
Under backpressure
C
...
Under backpressure and the direction of flow
E
...
Soft-seated check upstream of the assembly
B
...
Difference between the check valve 1 loading and the relief valve opening point
D
...
Sum of the check valve 1 loading and the relief valve divided by 2 - ANSDifference
between the check valve 1 loading and the relief valve opening point
A reduced pressure principle assembly's continuous discharge from a relief valve and a
gauge reading of 4 psid to 5 psid may indicate _____?
A
...
Debris fouling check valve number 1
C
...
Leakage through the diaphragm
E
...
Push the valve away from its seat
B
...
Remain closed with any zone pressure
D
...
Sustain all water hammer conditions - ANSPush the valve away from its seat
A spool is used to connect a ____?
A
...
Copper and PVC pipe
C
...
Potable and non-potable system
E
...
Backflow preventer
B
...
Expensive elbow
D
...
Useful training photo - ANS
...
Admit air into the downstream piping
B
...
Discharge water
D
...
Retain water pressure downstream of the check valve - ANSRetain water pressure
downstream of the check valve
A swing connection is a type of _____?
A
...
Cross-connection
C
...
Gauge component
E
...
Adjust pressure changes
B
...
Stop backflow
D
...
Support failing soil conditions - ANSMaintain pipe joint integrity
A water closet ball cock must be installed above the opening of the overflow pipe by at
least _____?
A
...
0 in
...
5 cm)
B
...
5 in
...
8 cm)
C
...
0 in
...
1 cm)
D
...
5 in
...
4 cm)
E
...
0 in
...
6 cm) - ANS1
...
(2
...
Backpressure
B
...
Gauge pressure differential

D
...
Static condition - ANSBackpressure
According to ANSI standard, potable water pipe marking requirements are _____
lettering
...
Blue background with white
B
...
Green background with yellow
D
...
White background with green - ANSGreen background with white
After the repair of a double check valve assembly, a field test is required for the _____?
A
...
Component repaired
C
...
Tester's personal records only
E
...
Classified
B
...
Laboratory listed
D
...
Tested with a sight tube - ANSInspected annually
An air-gap separation is mandatory between the potable supply and a(n) _____?
A
...
Isolation assembly
C
...
Sanitary sewer
E
...
Build drain
B
...
Indirect drain outlet
D
...
Stationary sensor - ANSRelief valve discharge
An air-gap separation will tend to _____?
A
...
Allow air to backpressure instead of liquid
C
...
Generate a whistle to warn of a siphon
E
...
High hazard/backsiphonage
B
...
Low hazard/backsiphonage
D
...
High or low hazard/backsiphonage only - ANSHigh or low hazard/backsiphonage
only
An atmospheric vacuum breaker is not required to have a(n) _____?
A
...
Installation elevation
C
...
Label
E
...
Air-inlet valve leakage
B
...
Chatter or noise during flow
D
...
Spring elongation - ANSChatter or noise during flow
An indirect cross-connection suggests the system may be subject to ____?
A
...
Backpressure
C
...
A meniscus
E
...
Air-gap separation
B
...
Double check valve assembly
D
...
Reduced pressure principle assembly - ANSReduced pressure principle assembly
Atmospheric vacuum breakers must not be subject to continuous water pressure for
more than ___ hr
...
3
B
...
12
D
...
24 - ANS12
Atmospheric vacuum breakers will typically be located on ____?

A
...
Fire-suppression systems
C
...
Utility storage tanks
E
...
Installed
B
...
Repaired or Installed
D
...
Water suppliers provide notice - ANSRepaired or Installed
Backpressure to a reduced pressure principle assembly fouled check valve number 2
will likely _____?
A
...
Force the relief valve to open and discharge
C
...
Push the check valve closed
E
...
Greater than atmospheric pressure
B
...
Greater than 0 gauge pressure
D
...
Less than atmospheric pressure - ANSLess than atmospheric pressure
Before testing a backflow preventer, the test cocks are flushed primarily to _____?
A
...
Create a water flow condition
C
...
Reduce pressure differentials
E
...
Begin completing the test report form
B
...
Obtain a repair kit
D
...
Provide notice to the fire department - ANSObtain permission to shut-down the water
service
Confined space air monitors will sound if the oxygen percentage is less than _____%
...
18
...
18
...
19
...
19
...
20
...
5
Containing a plumbing system from the public water supply requires backflow protection
at the _______?
A
...
Building foundation
C
...
Service Connection
E
...
Backpressure backflow
B
...
A failed air-inlet valve
D
...
A leaking or damaged shut-off valve 1 - ANSBackpressure backflow
Double check detector assembly flow indicators must register flow up to _____?
A
...
8 l/min)
B
...
6 l/min)
C
...
4 l/min)
D
...
1 l/min)
E
...
9 l/min) - ANS2 gpm (7
...
Bronze
B
...
Plastic
D
...
Spring activated - ANSIndependently acting
Double check valve assembly product performance standards require venting for
_____?
A
...
Test cock corrosion
C
...
Vertical installations
E
...
Closed tank
B
...
Submerged inlet
D
...
Valve - ANSValve
Gauges used for field tests of backflow preventers must have the calibration checked
____?
A
...
Annually
C
...
If used in temperature extremes
E
...
A high-pressure gauge control valve
B
...
Test cock number 1
D
...
Test cock number 3 - ANSTest cock number 1
If a reduced pressure principle assembly's relief valve opens at a differential pressure of
5
...
Brushing or stem is worn
B
...
Dirty or damaged relief valve seat or disc
D
...
Misaligned or broken relief valve spring - ANSDirty or damaged relief valve seat or
disc
If not marked, a pressure vacuum breaker's critical level is ____?
A
...
Measured from the check valve inlet
C
...
Not important
E
...
A leaking shut-off valve 2 with a parallel installation
B
...
The check valve is failed
D
...
The test cock is open - ANSA leaking shut-off valve 2 with a parallel installation
If testing a backflow preventer using a differential gauge and a single hose, it is
important to ____?

A
...
Maintain the gauge and hose connections at the same height as the assembly
C
...
Open the low-pressure and bypass control valves
E
...
24 in
...
28 in
...
32 in
...
36 in
...
40 in
...
(71 cm)
Intermittent relief valve discharge from a reduced pressure principle assembly is
probably caused by _____?
A
...
A fouled check valve number 2
C
...
A partially closed shut-off valve number 2
E
...
Alter its head loss
B
...
Require a tester failure
D
...
Void its approval - ANSVoid its approval
New backflow prevention assemblies should be tested ____?
A
...
Before the expiration of the warranty
C
...
In the p

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