BACKFLOW QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT !!!
What is the primary consideration when deciding whether to install a reduced
pressure or a double check valve assembly?
Answer: 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:
Answer: Water, steam, gases, chemicals, or unknown substances
What are the two types of backflow conditions?
Answer: Backpressure and backsiphonage
What is the term for a link between a potable water supply and any non-
potable supply or source?
Answer: Cross Connection
A check valve in an approved backflow assembly must be:
Answer: Resilient seated and loaded to the closed position
How many test cocks must an approved double check valve assembly have?
Answer: 4
What is the barometrical loop?
Answer: 33.9
, An atmospheric vacuum breaker can never:
Answer: Have a shutoff valve downstream
A manometer is:
Answer: 28 inches = psi
Indirect cross connection -ANSWER✔✔Water hose
Piping -ANSWER✔✔Direct cross connection.
What kind of gauge for backflows -ANSWER✔✔Differential gauge.
Growth of liquid when heated -ANSWER✔✔Thermal expansion.
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 disharge side of the check? -ANSWER✔✔Pressure vacuum breaker
assembly. (Pvb)
Which of the following backflow assemblies is allowable for use against a
contaminant when the backflow could be caused by backpressure? -
ANSWER✔✔Reduced pressure backflow assembly (RP)
A double check valve assembly must be tested at least every? -ANSWER✔✔12
months.
In a backsiphonage condition, the check valves of a double check assembly will be
-ANSWER✔✔1 check closed and 2nd check closed
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT !!!
What is the primary consideration when deciding whether to install a reduced
pressure or a double check valve assembly?
Answer: 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:
Answer: Water, steam, gases, chemicals, or unknown substances
What are the two types of backflow conditions?
Answer: Backpressure and backsiphonage
What is the term for a link between a potable water supply and any non-
potable supply or source?
Answer: Cross Connection
A check valve in an approved backflow assembly must be:
Answer: Resilient seated and loaded to the closed position
How many test cocks must an approved double check valve assembly have?
Answer: 4
What is the barometrical loop?
Answer: 33.9
, An atmospheric vacuum breaker can never:
Answer: Have a shutoff valve downstream
A manometer is:
Answer: 28 inches = psi
Indirect cross connection -ANSWER✔✔Water hose
Piping -ANSWER✔✔Direct cross connection.
What kind of gauge for backflows -ANSWER✔✔Differential gauge.
Growth of liquid when heated -ANSWER✔✔Thermal expansion.
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 disharge side of the check? -ANSWER✔✔Pressure vacuum breaker
assembly. (Pvb)
Which of the following backflow assemblies is allowable for use against a
contaminant when the backflow could be caused by backpressure? -
ANSWER✔✔Reduced pressure backflow assembly (RP)
A double check valve assembly must be tested at least every? -ANSWER✔✔12
months.
In a backsiphonage condition, the check valves of a double check assembly will be
-ANSWER✔✔1 check closed and 2nd check closed
