ASSE Backflow Recertification Exam
2026 Questions and Answers
A check valve in an approved backflow assembly must be tight when - Correct
answer-The assembly is subject to any backflow
a leaking check valve may be caused by? - Correct answer-Dirty or damaged check
disc, damaged check seat, broken or damaged spring, guide members hanging up
(all of the above)
Test cock number one of an approved double check valve assembly is located -
Correct answer-Upstream on shutoff valve number one
On an approved pressure vacuum breaker assembly, the shut off valves - Correct
answer-Are located at the inlet and outlet of all assemblies
The bypass line of a backflow must contain an approved assembly of equal -
Correct answer-Temperature rating
The bypass line of a backflow must contain an approved assembly of equal -
Correct answer-Protection
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,An atmospheric pressure vacuum breaker shall not be subjected to water pressure
for more than _______ hours - Correct answer-12
It is possible for a perfect vacuum at sea level to raise water in a pipe
approximately ____ feet? - Correct answer-34 feet
What is the most desirable place install a Backflow? - Correct answer-In an
accessible location above ground
Which of the following conditions could result in water contamination through
cross connection? - Correct answer-Turning off service to a multi story building
and allowing water supply to drain
The degree of hazard is - Correct answer-BASED UPON THE QUALITY OF A
NON POTABLE WATER SOURCE
The minimum type of containment protection for a non-health hazard, non
chemical sprinkler is - Correct answer-Double check
Type of protection required for a closed loop heating system containing chemicals -
Correct answer-RPZ
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
,Water continuously leaking from test cock #2 during a test procedure of a pressure
vacuum breaker assembly is probably caused by a leaking - Correct answer-INLET
SHUT-OFF VALVE #1
The required backflow for a fire sprinkler system containing chemicals is - Correct
answer-RPZ
Required protection of a backflow for a closed loop system containing glycol is -
Correct answer-RPZ
Primary consideration in determining what type of backflow to install is - Correct
answer-Degree of hazard
What is the probable cause of a relief valve failing to open during a field test of a
RPZ? - Correct answer-Malfunction of the relief valve mechanism
The required backflow protection for a chemically charged solar heating system
with an expansion tank is? - Correct answer-RPZ
Type of protection associated with an air gap separation is - Correct answer-
Backsiphonage & back pressure ( all of the above)
The application of a pressure vacuum breaker assembly is for - Correct answer-
Backsiphonage and isolation
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, How many pounds of pressure per square inch are exerted at the base of a column
of water that is two feet tall? - Correct answer-0.86
A pressure of 75 psi would be equivalent to ____ head of pressure? - Correct
answer-173.2 feet
A gauge installed at the bottom of an open tank, containing water 10 feet deep,
would indicate what pressure reading? - Correct answer-4.3 psi
What equipment is used to test a pressure vacuum breaker - Correct answer-
Differential pressure gauge
Test cock number ____ may be opened to establish flow through a backflow? -
Correct answer-Four
USC, AWWA and manufacturers recommend that backflow prevention assemblies
be inspected, and that their proper operation is verified by a certified tester at least?
- Correct answer-Once every year
A differential pressure gauge is used in the testing of - Correct answer-Double
checks and RPZs
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
2026 Questions and Answers
A check valve in an approved backflow assembly must be tight when - Correct
answer-The assembly is subject to any backflow
a leaking check valve may be caused by? - Correct answer-Dirty or damaged check
disc, damaged check seat, broken or damaged spring, guide members hanging up
(all of the above)
Test cock number one of an approved double check valve assembly is located -
Correct answer-Upstream on shutoff valve number one
On an approved pressure vacuum breaker assembly, the shut off valves - Correct
answer-Are located at the inlet and outlet of all assemblies
The bypass line of a backflow must contain an approved assembly of equal -
Correct answer-Temperature rating
The bypass line of a backflow must contain an approved assembly of equal -
Correct answer-Protection
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,An atmospheric pressure vacuum breaker shall not be subjected to water pressure
for more than _______ hours - Correct answer-12
It is possible for a perfect vacuum at sea level to raise water in a pipe
approximately ____ feet? - Correct answer-34 feet
What is the most desirable place install a Backflow? - Correct answer-In an
accessible location above ground
Which of the following conditions could result in water contamination through
cross connection? - Correct answer-Turning off service to a multi story building
and allowing water supply to drain
The degree of hazard is - Correct answer-BASED UPON THE QUALITY OF A
NON POTABLE WATER SOURCE
The minimum type of containment protection for a non-health hazard, non
chemical sprinkler is - Correct answer-Double check
Type of protection required for a closed loop heating system containing chemicals -
Correct answer-RPZ
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
,Water continuously leaking from test cock #2 during a test procedure of a pressure
vacuum breaker assembly is probably caused by a leaking - Correct answer-INLET
SHUT-OFF VALVE #1
The required backflow for a fire sprinkler system containing chemicals is - Correct
answer-RPZ
Required protection of a backflow for a closed loop system containing glycol is -
Correct answer-RPZ
Primary consideration in determining what type of backflow to install is - Correct
answer-Degree of hazard
What is the probable cause of a relief valve failing to open during a field test of a
RPZ? - Correct answer-Malfunction of the relief valve mechanism
The required backflow protection for a chemically charged solar heating system
with an expansion tank is? - Correct answer-RPZ
Type of protection associated with an air gap separation is - Correct answer-
Backsiphonage & back pressure ( all of the above)
The application of a pressure vacuum breaker assembly is for - Correct answer-
Backsiphonage and isolation
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, How many pounds of pressure per square inch are exerted at the base of a column
of water that is two feet tall? - Correct answer-0.86
A pressure of 75 psi would be equivalent to ____ head of pressure? - Correct
answer-173.2 feet
A gauge installed at the bottom of an open tank, containing water 10 feet deep,
would indicate what pressure reading? - Correct answer-4.3 psi
What equipment is used to test a pressure vacuum breaker - Correct answer-
Differential pressure gauge
Test cock number ____ may be opened to establish flow through a backflow? -
Correct answer-Four
USC, AWWA and manufacturers recommend that backflow prevention assemblies
be inspected, and that their proper operation is verified by a certified tester at least?
- Correct answer-Once every year
A differential pressure gauge is used in the testing of - Correct answer-Double
checks and RPZs
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
