Backflow Final Questions and Answers
100% Verified | Updated 2024-2025
All the following are required parts of an atmospheric vacuum breaker (asse1001)
except a
Air inlet float valve
The body
Air canopy
Shutoff valve - ANSWER Shutoff valve
A single check valve for a backflow prevention is acceptable
For low hazard
For non-hazard residential
applications
On boilers only
Never - ANSWER Never
,The following absolute pressure could cause backsiphonage to occur in a hydraulic
system (distribution system) at sea level
10.5 psia
15.0 psia
33.9 psia
100 psia - ANSWER 10.5 psia
It is the recommended that double check backflow prevention assembly (asse
1015) be installed with its lowest point a minimum of
Six inches from wall
Twelve inches from highest point of use
Twelve inches above the surrounding ground or floor
Thirty inches above the surrounding ground or floor - ANSWER 12 inches
above surrounding floor
When testing a double check valve backflow prevention assembly (asse1015)
number two shutoff valve must be closed first to
,Prevent backpressure during the test
Prevent backsiphonage during the test
Hold water in the downstream piping
Maintain pressure in the assembly - ANSWER Maintain pressure in the
assembly
Which of the following should be considered when installing a cross connection
control device or assembly?
Sidewall clearances
Degree of hazard
Distance of backflow device
from floor
All above - ANSWER All above
Backflow can occur whenever the pressure in a potable water system is ______
the pressure in a non potable piping system and the two systems are physically
connected
, Greater than
Less than
Equal to
About same as - ANSWER Less than
The required number of test cocks on a two inch and smaller pressure vacuum
breaker assembly (asse 1020) is
None
One
Two
Three - ANSWER Two
The springs on the two check valves of a reduced pressure principle backflow
preventer (asse 1013) are
Identical
100% Verified | Updated 2024-2025
All the following are required parts of an atmospheric vacuum breaker (asse1001)
except a
Air inlet float valve
The body
Air canopy
Shutoff valve - ANSWER Shutoff valve
A single check valve for a backflow prevention is acceptable
For low hazard
For non-hazard residential
applications
On boilers only
Never - ANSWER Never
,The following absolute pressure could cause backsiphonage to occur in a hydraulic
system (distribution system) at sea level
10.5 psia
15.0 psia
33.9 psia
100 psia - ANSWER 10.5 psia
It is the recommended that double check backflow prevention assembly (asse
1015) be installed with its lowest point a minimum of
Six inches from wall
Twelve inches from highest point of use
Twelve inches above the surrounding ground or floor
Thirty inches above the surrounding ground or floor - ANSWER 12 inches
above surrounding floor
When testing a double check valve backflow prevention assembly (asse1015)
number two shutoff valve must be closed first to
,Prevent backpressure during the test
Prevent backsiphonage during the test
Hold water in the downstream piping
Maintain pressure in the assembly - ANSWER Maintain pressure in the
assembly
Which of the following should be considered when installing a cross connection
control device or assembly?
Sidewall clearances
Degree of hazard
Distance of backflow device
from floor
All above - ANSWER All above
Backflow can occur whenever the pressure in a potable water system is ______
the pressure in a non potable piping system and the two systems are physically
connected
, Greater than
Less than
Equal to
About same as - ANSWER Less than
The required number of test cocks on a two inch and smaller pressure vacuum
breaker assembly (asse 1020) is
None
One
Two
Three - ANSWER Two
The springs on the two check valves of a reduced pressure principle backflow
preventer (asse 1013) are
Identical
