BACKFLOW PREVENTION ASSEMBLY EXAM
SCRIPT 2026 QUESTIONS WITH ACCURATE
SOLUTIONS GRADED A+
● Overflow level . Answer: The maximum height that water or liquid
will rise in a receptacle before it flows over the rim.
● Backflow . Answer: A hydraulic condition, caused by a difference in
pressures, in which non-potable water or other fluids flow into a potable
water system.
● RPBP . Answer: A shortened name for a reduced pressure backflow
preventer
● Air Gap . 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 . Answer: Any arrangements of pipes,
fittings, or devices that indirectly connects a potable water supply to a
non-potable source
,● Backsiphonage . Answer: A backflow condition in which the pressure
in the distribution system is less than atmospheric pressure
(subatmospheric)
● Hose bib . Answer: A faucet to which a hose may be attached
● Reduced pressure zone backflow preventer . Answer: A mechanical
device consisting of two independnetly operating, spring-loaded check
valves with a reduced pressure zone between check valves.
● Auxiliary supply . Answer: Any water source or system, other than the
potable water supply, that may be available in the building or premesis.
● Actual Cross Connection . Answer: Any arrangement of pipes, fittings,
that connects a potable water supply directly to a non-potable source at
all times.
● Feed water . 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 . 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 . Answer: In cross-connection control, any pipe arrangement
that passes water around a protective device, causing it to be ineffective.
● Back pressure . Answer: A backflow condition in which a pump,
elevated tank, boiler or other means results in a downstream pressure
greater than the supply pressure
● Cross connection . Answer: Any arrangement of pipes, fitting, fixtures,
or devices that connects a non potable system to a potable water system
● Atmospheric vacuum breaker . Answer: A mechanical device
consisting of a float check valve and an air inlet port designed to prevent
backsiphonage
● Double Check Valve Assembly . Answer: A testable mechanical device
consiting of two independently operating, spring-loaded check valves
● Potable . Answer: Water that is safe for human consumption
● Backflow . Answer: The reversal of the normal direction of flow
● Backpressure . Answer: An elevation of pressure in the downstream
piping system above the supply pressure
SCRIPT 2026 QUESTIONS WITH ACCURATE
SOLUTIONS GRADED A+
● Overflow level . Answer: The maximum height that water or liquid
will rise in a receptacle before it flows over the rim.
● Backflow . Answer: A hydraulic condition, caused by a difference in
pressures, in which non-potable water or other fluids flow into a potable
water system.
● RPBP . Answer: A shortened name for a reduced pressure backflow
preventer
● Air Gap . 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 . Answer: Any arrangements of pipes,
fittings, or devices that indirectly connects a potable water supply to a
non-potable source
,● Backsiphonage . Answer: A backflow condition in which the pressure
in the distribution system is less than atmospheric pressure
(subatmospheric)
● Hose bib . Answer: A faucet to which a hose may be attached
● Reduced pressure zone backflow preventer . Answer: A mechanical
device consisting of two independnetly operating, spring-loaded check
valves with a reduced pressure zone between check valves.
● Auxiliary supply . Answer: Any water source or system, other than the
potable water supply, that may be available in the building or premesis.
● Actual Cross Connection . Answer: Any arrangement of pipes, fittings,
that connects a potable water supply directly to a non-potable source at
all times.
● Feed water . 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 . 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 . Answer: In cross-connection control, any pipe arrangement
that passes water around a protective device, causing it to be ineffective.
● Back pressure . Answer: A backflow condition in which a pump,
elevated tank, boiler or other means results in a downstream pressure
greater than the supply pressure
● Cross connection . Answer: Any arrangement of pipes, fitting, fixtures,
or devices that connects a non potable system to a potable water system
● Atmospheric vacuum breaker . Answer: A mechanical device
consisting of a float check valve and an air inlet port designed to prevent
backsiphonage
● Double Check Valve Assembly . Answer: A testable mechanical device
consiting of two independently operating, spring-loaded check valves
● Potable . Answer: Water that is safe for human consumption
● Backflow . Answer: The reversal of the normal direction of flow
● Backpressure . Answer: An elevation of pressure in the downstream
piping system above the supply pressure
