CHAPTER 3 - BACKFLOW PREVENTION DEVICES - IRRIGATION BASICS EXAM QUESTIONS AND ANSWERS

CHAPTER 3 - BACKFLOW
PREVENTION DEVICES - IRRIGATION
BASICS EXAM QUESTIONS AND
ANSWERS



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

Water hammer may result in backflow caused by _______.

a. back pressure
b. back siphonage
c. constant pressure
d. surge pressure - Correct Answers -a. back pressure
An AVB not suitable for __________.

a. installation after zone valves
b. installation before zone valves
c. preventing back-siphonage
d. low hazard applications - Correct Answers -b. installation before zone valves

Backflow device which has a spring-loaded float and a check valve.

a. atmospheric vacuum breaker