ASSE BACKFLOW RECERTIFICATION
EXAM QUESTIONS AND ANSWERS
A check valve in an approved backflow assembly must be tight when - Correct Answers
-The assembly is subject to any backflow
a leaking check valve may be caused by? - Correct Answers -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
Answers -Upstream on shutoff valve number one
On an approved pressure vacuum breaker assembly, the shut off valves - Correct
Answers -Are located at the inlet and outlet of all assemblies
The bypass line of a backflow must contain an approved assembly of equal - Correct
Answers -Temperature rating
The bypass line of a backflow must contain an approved assembly of equal - Correct
Answers -Protection
An atmospheric pressure vacuum breaker shall not be subjected to water pressure for
more than _______ hours - Correct Answers -12
It is possible for a perfect vacuum at sea level to raise water in a pipe approximately
____ feet? - Correct Answers -34 feet
What is the most desirable place install a Backflow? - Correct Answers -In an
accessible location above ground
Which of the following conditions could result in water contamination through cross
connection? - Correct Answers -Turning off service to a multi story building and allowing
water supply to drain
The degree of hazard is - Correct Answers -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 Answers -Double check
Type of protection required for a closed loop heating system containing chemicals -
Correct Answers -RPZ
Water continuously leaking from test cock #2 during a test procedure of a pressure
vacuum breaker assembly is probably caused by a leaking - Correct Answers -INLET
SHUT-OFF VALVE #1
The required backflow for a fire sprinkler system containing chemicals is - Correct
Answers -RPZ
Required protection of a backflow for a closed loop system containing glycol is - Correct
Answers -RPZ
Primary consideration in determining what type of backflow to install is - Correct
Answers -Degree of hazard
What is the probable cause of a relief valve failing to open during a field test of a RPZ? -
Correct Answers -Malfunction of the relief valve mechanism
The required backflow protection for a chemically charged solar heating system with an
expansion tank is? - Correct Answers -RPZ
Type of protection associated with an air gap separation is - Correct Answers -
Backsiphonage & back pressure ( all of the above)
The application of a pressure vacuum breaker assembly is for - Correct Answers -
Backsiphonage and isolation
How many pounds of pressure per square inch are exerted at the base of a column of
water that is two feet tall? - Correct Answers -0.86
A pressure of 75 psi would be equivalent to ____ head of pressure? - Correct Answers -
173.2 feet
A gauge installed at the bottom of an open tank, containing water 10 feet deep, would
indicate what pressure reading? - Correct Answers -4.3 psi
What equipment is used to test a pressure vacuum breaker - Correct Answers -
Differential pressure gauge
Test cock number ____ may be opened to establish flow through a backflow? - Correct
Answers -Four
EXAM QUESTIONS AND ANSWERS
A check valve in an approved backflow assembly must be tight when - Correct Answers
-The assembly is subject to any backflow
a leaking check valve may be caused by? - Correct Answers -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
Answers -Upstream on shutoff valve number one
On an approved pressure vacuum breaker assembly, the shut off valves - Correct
Answers -Are located at the inlet and outlet of all assemblies
The bypass line of a backflow must contain an approved assembly of equal - Correct
Answers -Temperature rating
The bypass line of a backflow must contain an approved assembly of equal - Correct
Answers -Protection
An atmospheric pressure vacuum breaker shall not be subjected to water pressure for
more than _______ hours - Correct Answers -12
It is possible for a perfect vacuum at sea level to raise water in a pipe approximately
____ feet? - Correct Answers -34 feet
What is the most desirable place install a Backflow? - Correct Answers -In an
accessible location above ground
Which of the following conditions could result in water contamination through cross
connection? - Correct Answers -Turning off service to a multi story building and allowing
water supply to drain
The degree of hazard is - Correct Answers -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 Answers -Double check
Type of protection required for a closed loop heating system containing chemicals -
Correct Answers -RPZ
Water continuously leaking from test cock #2 during a test procedure of a pressure
vacuum breaker assembly is probably caused by a leaking - Correct Answers -INLET
SHUT-OFF VALVE #1
The required backflow for a fire sprinkler system containing chemicals is - Correct
Answers -RPZ
Required protection of a backflow for a closed loop system containing glycol is - Correct
Answers -RPZ
Primary consideration in determining what type of backflow to install is - Correct
Answers -Degree of hazard
What is the probable cause of a relief valve failing to open during a field test of a RPZ? -
Correct Answers -Malfunction of the relief valve mechanism
The required backflow protection for a chemically charged solar heating system with an
expansion tank is? - Correct Answers -RPZ
Type of protection associated with an air gap separation is - Correct Answers -
Backsiphonage & back pressure ( all of the above)
The application of a pressure vacuum breaker assembly is for - Correct Answers -
Backsiphonage and isolation
How many pounds of pressure per square inch are exerted at the base of a column of
water that is two feet tall? - Correct Answers -0.86
A pressure of 75 psi would be equivalent to ____ head of pressure? - Correct Answers -
173.2 feet
A gauge installed at the bottom of an open tank, containing water 10 feet deep, would
indicate what pressure reading? - Correct Answers -4.3 psi
What equipment is used to test a pressure vacuum breaker - Correct Answers -
Differential pressure gauge
Test cock number ____ may be opened to establish flow through a backflow? - Correct
Answers -Four
