QUESTIONS AND 100% CORRECT WELL DETAILED
ANSWERS|LATEST
UPDATE!!!!2025/2026|GUARANTEED
A double check backflow prevention assembly test and maintenance report shall include all
of the following information except the:
A) address of the installationb) serial number of the assembly
C) test results of check valve number one (1)
D) test results of check valve number two (2)
E) differential pressure relief valve discharge reading - answer e) differential pressure
relief valve discharge reading
The by-pass line of an approved backflow prevention assembly must contain an approved
assembly of equal:
A) corrosion resistance
B) flow capacity
C) protection
D) size
E) temperature rating - answer c) protection
An atmospheric type vacuum breaker shall not be subjected to water pressure for periods
than ______ hours.
A) six (6)
B) eight (8)
C) twelve (12)
1
,D) twenty-four (24)
E) none of the above - answer c) twelve (12)
It is possible for a perfect vacuum at sea level to raise water in a pipe approximately
_________ feet.
A) twenty-five (25)
B) thirty (30)
C) thirty-two (32)
D) thirty-four (34)
E) thirty-six (36) - answer d) thirty-four (34)
What is the most desirable place to install a backflow prevention device and/or assembly?
A) in a reinforced concrete pit
B) in an accessible location above ground
C) underground, with a minimum of twelve (12) inches of cover
D) at or above ceiling height, to protect it from vandalism
E) behind the boiler or equipment served, so it can be worked on when the equipment is
removed - answer b) in an accessible location above ground
Which of the following conditions could result in water contamination through a cross-
connection?
A) a vacuum created by the improper use of water hammer arresters
B) the use of self closing lavatory faucets
C) turning off service to a multi-story building and allowing the water supply to drain
D) a vacuum created by the use of quick closing valves on the lower floors of a building
exceeding ten (10) floors in height
E) the installation of water conserving fixtures, into a building designed prior to their
required us - answer c) turning off service to a multi-story building and allowing the
water supply to drain
2
, What is another term that describes water quality as a health hazard resulting from
backflow?
A) isolation
B) contamination
C) cross-connection
D) pollution
E) contained - answer b) contamination
The venturi effect states that when the water velocity within the pipe increases, the
pressure:\
A) will increase proportionately
B) will remain constant
C) compresses excess volumes of water
D) decreases
E) creates backpressure - answer d) decreases
The degree of hazard is:
A) the acceptable temperature range of a non-potable water source
B) the angle of the backflow preventer
C) based upon the quality of a non potable water source
D) distance between the cross-connection and the backflow preventer
E) the engineer's specified elevation of non-potable piping - answer c) based upon the
quality of a non potable water source
Backflow may be described as either:
A) backpressure or backsiphonage
B) contamination or pollution
3
ANSWERS|LATEST
UPDATE!!!!2025/2026|GUARANTEED
A double check backflow prevention assembly test and maintenance report shall include all
of the following information except the:
A) address of the installationb) serial number of the assembly
C) test results of check valve number one (1)
D) test results of check valve number two (2)
E) differential pressure relief valve discharge reading - answer e) differential pressure
relief valve discharge reading
The by-pass line of an approved backflow prevention assembly must contain an approved
assembly of equal:
A) corrosion resistance
B) flow capacity
C) protection
D) size
E) temperature rating - answer c) protection
An atmospheric type vacuum breaker shall not be subjected to water pressure for periods
than ______ hours.
A) six (6)
B) eight (8)
C) twelve (12)
1
,D) twenty-four (24)
E) none of the above - answer c) twelve (12)
It is possible for a perfect vacuum at sea level to raise water in a pipe approximately
_________ feet.
A) twenty-five (25)
B) thirty (30)
C) thirty-two (32)
D) thirty-four (34)
E) thirty-six (36) - answer d) thirty-four (34)
What is the most desirable place to install a backflow prevention device and/or assembly?
A) in a reinforced concrete pit
B) in an accessible location above ground
C) underground, with a minimum of twelve (12) inches of cover
D) at or above ceiling height, to protect it from vandalism
E) behind the boiler or equipment served, so it can be worked on when the equipment is
removed - answer b) in an accessible location above ground
Which of the following conditions could result in water contamination through a cross-
connection?
A) a vacuum created by the improper use of water hammer arresters
B) the use of self closing lavatory faucets
C) turning off service to a multi-story building and allowing the water supply to drain
D) a vacuum created by the use of quick closing valves on the lower floors of a building
exceeding ten (10) floors in height
E) the installation of water conserving fixtures, into a building designed prior to their
required us - answer c) turning off service to a multi-story building and allowing the
water supply to drain
2
, What is another term that describes water quality as a health hazard resulting from
backflow?
A) isolation
B) contamination
C) cross-connection
D) pollution
E) contained - answer b) contamination
The venturi effect states that when the water velocity within the pipe increases, the
pressure:\
A) will increase proportionately
B) will remain constant
C) compresses excess volumes of water
D) decreases
E) creates backpressure - answer d) decreases
The degree of hazard is:
A) the acceptable temperature range of a non-potable water source
B) the angle of the backflow preventer
C) based upon the quality of a non potable water source
D) distance between the cross-connection and the backflow preventer
E) the engineer's specified elevation of non-potable piping - answer c) based upon the
quality of a non potable water source
Backflow may be described as either:
A) backpressure or backsiphonage
B) contamination or pollution
3
