CHAPTER 3 - BACKFLOW
PREVENTION DEVICES - IRRIGATION
BASICS EXAM
An actual or potential connection between any part of a potable water system and any
other environment containing other substances in a manner that, under any
circumstances would allow such substances to enter the potable water system.
a. water tap
b. cross connection
c. back flow prevention
d. double check valve - Correct Answers -b. cross connection
Backflow is caused by _______.
a. unprotected cross connections
b. constant pressure
c. back pressure and back siphonage
d. velocity - Correct Answers -c. back pressure and back siphonage
Backflow device which must be installed 12" above the grade.
a. atmospheric vacuum breaker
b. pressure vacuum breaker
c. double check valve
d. reduced pressure zone - Correct Answers -d. reduced pressure zone
Which backflow device is required for systems with fertilizer injectors?
a. Atmospheric vacuum breaker
b. Pressure vacuum breaker
c. Double check valve assembly
d. Reduced pressure principle - Correct Answers -d. Reduced pressure principle
Which backflow device is recommended for low hazard applications?
a. Atmospheric vacuum breaker
b. Pressure vacuum breaker
c. Double check assembly
PREVENTION DEVICES - IRRIGATION
BASICS EXAM
An actual or potential connection between any part of a potable water system and any
other environment containing other substances in a manner that, under any
circumstances would allow such substances to enter the potable water system.
a. water tap
b. cross connection
c. back flow prevention
d. double check valve - Correct Answers -b. cross connection
Backflow is caused by _______.
a. unprotected cross connections
b. constant pressure
c. back pressure and back siphonage
d. velocity - Correct Answers -c. back pressure and back siphonage
Backflow device which must be installed 12" above the grade.
a. atmospheric vacuum breaker
b. pressure vacuum breaker
c. double check valve
d. reduced pressure zone - Correct Answers -d. reduced pressure zone
Which backflow device is required for systems with fertilizer injectors?
a. Atmospheric vacuum breaker
b. Pressure vacuum breaker
c. Double check valve assembly
d. Reduced pressure principle - Correct Answers -d. Reduced pressure principle
Which backflow device is recommended for low hazard applications?
a. Atmospheric vacuum breaker
b. Pressure vacuum breaker
c. Double check assembly
