Backflow Prevention Assembly Tester
Practice Exam Questions and Answers
(2026) | Authentic Exam Questions | Full
Answer Key | A+
• RPBP. CORRECT ANSWER: A shortened name for a reduced pressure backflow
preventer
• Air Gap. CORRECT ANSWER: In plumbing, the unobstructed vertical distance
through the free atmosphere between the lowest opening from any pipe or outlet
supplying water to a tank, plumbing fixture, or other container, and the overflow rim of
that container
• potential cross connection. CORRECT ANSWER: Any arrangements of pipes, fittings,
or devices that indirectly connects a potable water supply to a non-potable source
• Dysentery. CORRECT ANSWER: A disease (sometime waterborne) caused by
pathogenic microorganisms and characterized by severe diarrhea with passage of
mucus and blood
• Backsiphonage. CORRECT ANSWER: A backflow condition in which the pressure in
the distribution system is less than atmospheric pressure (subatmospheric)
• Hose bib. CORRECT ANSWER: A faucet to which a hose may be attached
• Carrier. CORRECT ANSWER: A human or animal that carries germs and can pass
them to another person without getting the disease himself.
• Reduced pressure zone backflow preventer. CORRECT ANSWER: A mechanical
device consisting of two independnetly operating, spring-loaded check valves with a
reduced pressure zone between check valves.
• Auxiliary supply. CORRECT ANSWER: Any water source or system, other than the
potable water supply, that may be available in the building or premesis.
• Actual Cross Connection. CORRECT ANSWER: Any arrangement of pipes, fittings,
that connects a potable water supply directly to a non-potable source at all times.
• Hepatitis. CORRECT ANSWER: An inflammation of the liver caused by a pathogenic
virus. Symptoms are jaundice, general weakness, nausea, and the presence of dark
urine.
, • Feed water. CORRECT ANSWER: Water that is added to a commercial or industrial
system and subsequently used by the system, such as water that is fed to a boiler to
produce steam.
• Pressure vacuum breaker. CORRECT ANSWER: A device designed to prevent
backsiphonsge, consisting of one independently operating spring-loaded check valve
and an independently operating spring-loaded air-inlet valve.
• Bypass. CORRECT ANSWER: In cross-connection control, any pipe arrangement that
passes water around a protective device, causing it to be ineffective.
• Gastroenteritis. CORRECT ANSWER: An intestinal disease caused by pathogenic
microorganisms, which involves inflammation of the stomach and intestines. Symptoms
are diarrhea, pain, and nausea.
• Back pressure. CORRECT ANSWER: A backflow condition in which a pump, elevated
tank, boiler or other means results in a downstream pressure greater than the supply
pressure
• Incubation period. CORRECT ANSWER: The time period that elapses between the
time a person is exposed to some disease and the time that person shows the first sign
of symptom of the disease.
• Cross connection. CORRECT ANSWER: Any arrangement of pipes, fitting, fixtures, or
devices that connects a non potable system to a potable water system
• Atmospheric vacuum breaker. CORRECT ANSWER: A mechanical device consisting
of a float check valve and an air inlet port designed to prevent backsiphonage
• Double Check Valve Assembly. CORRECT ANSWER: A testable mechanical device
consiting of two independently operating, spring-loaded check valves
• Potable. CORRECT ANSWER: Water that is safe for human consumption
• Backflow. CORRECT ANSWER: The reversal of the normal direction of flow
• Backpressure. CORRECT ANSWER: An elevation of pressure in the downstream
piping system above the supply pressure
• Backsiphonage. CORRECT ANSWER: Reduction in system pressure which causes a
sub atmospheric pressure to exist at a site in the water system
• Cross-connection. CORRECT ANSWER: A link between potable and non-potable
sources
Practice Exam Questions and Answers
(2026) | Authentic Exam Questions | Full
Answer Key | A+
• RPBP. CORRECT ANSWER: A shortened name for a reduced pressure backflow
preventer
• Air Gap. CORRECT ANSWER: In plumbing, the unobstructed vertical distance
through the free atmosphere between the lowest opening from any pipe or outlet
supplying water to a tank, plumbing fixture, or other container, and the overflow rim of
that container
• potential cross connection. CORRECT ANSWER: Any arrangements of pipes, fittings,
or devices that indirectly connects a potable water supply to a non-potable source
• Dysentery. CORRECT ANSWER: A disease (sometime waterborne) caused by
pathogenic microorganisms and characterized by severe diarrhea with passage of
mucus and blood
• Backsiphonage. CORRECT ANSWER: A backflow condition in which the pressure in
the distribution system is less than atmospheric pressure (subatmospheric)
• Hose bib. CORRECT ANSWER: A faucet to which a hose may be attached
• Carrier. CORRECT ANSWER: A human or animal that carries germs and can pass
them to another person without getting the disease himself.
• Reduced pressure zone backflow preventer. CORRECT ANSWER: A mechanical
device consisting of two independnetly operating, spring-loaded check valves with a
reduced pressure zone between check valves.
• Auxiliary supply. CORRECT ANSWER: Any water source or system, other than the
potable water supply, that may be available in the building or premesis.
• Actual Cross Connection. CORRECT ANSWER: Any arrangement of pipes, fittings,
that connects a potable water supply directly to a non-potable source at all times.
• Hepatitis. CORRECT ANSWER: An inflammation of the liver caused by a pathogenic
virus. Symptoms are jaundice, general weakness, nausea, and the presence of dark
urine.
, • Feed water. CORRECT ANSWER: Water that is added to a commercial or industrial
system and subsequently used by the system, such as water that is fed to a boiler to
produce steam.
• Pressure vacuum breaker. CORRECT ANSWER: A device designed to prevent
backsiphonsge, consisting of one independently operating spring-loaded check valve
and an independently operating spring-loaded air-inlet valve.
• Bypass. CORRECT ANSWER: In cross-connection control, any pipe arrangement that
passes water around a protective device, causing it to be ineffective.
• Gastroenteritis. CORRECT ANSWER: An intestinal disease caused by pathogenic
microorganisms, which involves inflammation of the stomach and intestines. Symptoms
are diarrhea, pain, and nausea.
• Back pressure. CORRECT ANSWER: A backflow condition in which a pump, elevated
tank, boiler or other means results in a downstream pressure greater than the supply
pressure
• Incubation period. CORRECT ANSWER: The time period that elapses between the
time a person is exposed to some disease and the time that person shows the first sign
of symptom of the disease.
• Cross connection. CORRECT ANSWER: Any arrangement of pipes, fitting, fixtures, or
devices that connects a non potable system to a potable water system
• Atmospheric vacuum breaker. CORRECT ANSWER: A mechanical device consisting
of a float check valve and an air inlet port designed to prevent backsiphonage
• Double Check Valve Assembly. CORRECT ANSWER: A testable mechanical device
consiting of two independently operating, spring-loaded check valves
• Potable. CORRECT ANSWER: Water that is safe for human consumption
• Backflow. CORRECT ANSWER: The reversal of the normal direction of flow
• Backpressure. CORRECT ANSWER: An elevation of pressure in the downstream
piping system above the supply pressure
• Backsiphonage. CORRECT ANSWER: Reduction in system pressure which causes a
sub atmospheric pressure to exist at a site in the water system
• Cross-connection. CORRECT ANSWER: A link between potable and non-potable
sources
