Sample exam questions and
recommended references for ABC's
backflow prevention assembly test 2024
What is the pressure at the base of a 100 foot high standpipe filled with water? - 43.3
psi
A column of water exerts pressure at the bottom of a column due to - Weight of the
water
What is the primary consideration when deciding whether to install a reduced pressure
or a double valve assembly? - Degree of hazard
A cross-connection is an actual or potential connection that could allow backflow to
occur between a potable water system and a piping system that contains potentially
unsafe - Water, Water, steam, steam, gases, gases, chemicals, or unknown substances
What types of backflow conditions? - Backpressure and backsiphonage
A link between a potable water supply and any non-potable supply or source is called
a(n) - Cross connection
A check valve in an approved backflow assembly must be - Resilient seated and loaded
to the closed position
To avoid creating water hammer, when returning a backflow prevention assembly to
service the tester should - Slowly pressurize the assembly and then slowly pressurize
the downstream piping
In a backsiphonage condition, the check valves of a double check assembly will bo - 1
check closed and 2d check closed
How many test cocks must an approved double check valve assembly have? - 4
A leaking check valve # 2 of a reduced pressure assembly and backpressure may
cause - Relief valve discharge
What What could could be be the the problem problem if if the the relief relicf valve
valve of of a a reduced reduced pressure pressure assembly assembly discharges
discharges int intermitently? - Large pressure fluctuations
Which of the following backflow assemblies contains an independently operating
internally loaded check valve and an independently operating loaded air inlet valve
located on the discharge side of the check? - Pressure vacuum breaker assembly
recommended references for ABC's
backflow prevention assembly test 2024
What is the pressure at the base of a 100 foot high standpipe filled with water? - 43.3
psi
A column of water exerts pressure at the bottom of a column due to - Weight of the
water
What is the primary consideration when deciding whether to install a reduced pressure
or a double valve assembly? - Degree of hazard
A cross-connection is an actual or potential connection that could allow backflow to
occur between a potable water system and a piping system that contains potentially
unsafe - Water, Water, steam, steam, gases, gases, chemicals, or unknown substances
What types of backflow conditions? - Backpressure and backsiphonage
A link between a potable water supply and any non-potable supply or source is called
a(n) - Cross connection
A check valve in an approved backflow assembly must be - Resilient seated and loaded
to the closed position
To avoid creating water hammer, when returning a backflow prevention assembly to
service the tester should - Slowly pressurize the assembly and then slowly pressurize
the downstream piping
In a backsiphonage condition, the check valves of a double check assembly will bo - 1
check closed and 2d check closed
How many test cocks must an approved double check valve assembly have? - 4
A leaking check valve # 2 of a reduced pressure assembly and backpressure may
cause - Relief valve discharge
What What could could be be the the problem problem if if the the relief relicf valve
valve of of a a reduced reduced pressure pressure assembly assembly discharges
discharges int intermitently? - Large pressure fluctuations
Which of the following backflow assemblies contains an independently operating
internally loaded check valve and an independently operating loaded air inlet valve
located on the discharge side of the check? - Pressure vacuum breaker assembly
