Backflow Final Exam with 100% accurate solutions ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
All the following are required parts of an atmospheric vacuum breaker (asse1001) except a
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Air inlet float valve
||\\//|| ||\\//|| ||\\//||
The body ||\\//||
Air canopy ||\\//||
Shutoff valve - correct 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 - correct 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 - correct 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 - correct 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 - correct 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 - correct 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 - correct 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 - correct answer✔✔Two ||\\//|| ||\\//|| ||\\//||
The springs on the two check valves of a reduced pressure principle backflow preventer
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
(asse 1013) are ||\\//|| ||\\//||
Identical ||\\//||
Externally loaded ||\\//||
Not interchangeable
||\\//||
Interchangeable - correct answer✔✔Not interchangeable ||\\//|| ||\\//|| ||\\//|| ||\\//||
The spring relief valve assembly of a reduced pressure principle backflow preventer (asse
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
1013) acts to ||\\//|| ||\\//||
All the following are required parts of an atmospheric vacuum breaker (asse1001) except a
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Air inlet float valve
||\\//|| ||\\//|| ||\\//||
The body ||\\//||
Air canopy ||\\//||
Shutoff valve - correct 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 - correct 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 - correct 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 - correct 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 - correct 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 - correct 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 - correct 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 - correct answer✔✔Two ||\\//|| ||\\//|| ||\\//||
The springs on the two check valves of a reduced pressure principle backflow preventer
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
(asse 1013) are ||\\//|| ||\\//||
Identical ||\\//||
Externally loaded ||\\//||
Not interchangeable
||\\//||
Interchangeable - correct answer✔✔Not interchangeable ||\\//|| ||\\//|| ||\\//|| ||\\//||
The spring relief valve assembly of a reduced pressure principle backflow preventer (asse
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
1013) acts to ||\\//|| ||\\//||
