BACKFLOW PREVENTION STUDY
GUIDE (CHARLESTON WATER
SYSTEMS) QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS 100%
CORRECT RATED A+
Q: Name the two types of backflow.
A: ✔✔ Backpressure and Backsiphonage
Q: All of the following may be considered acceptable for containment of a
building with the exception of a(n):
a) Air Gap
b) Double Check Valve Assembly
c) Residential Dual Check
d) Reduced Pressure Backflow Assembly
e) Pressure Vacuum Breaker Assembly
A: ✔✔ e) Pressure Vacuum Breaker Assembly
Q: A Reduced Pressure Backflow Assembly (RP) protects against:
a) High hazard, Backpressure
b) High hazard, Backsiphonage
c) Low hazard, Backpressure & Backsiphonage
d) All of the above
A: ✔✔ d) All of the above
How many test cocks are on a Reduced Pressure Backflow Assembly? -
ANSWER✔✔4
How many test cocks are on a Double Check Valve Assembly? -ANSWER✔✔4
, How many test cocks are on a Pressure Vacuum Breaker Assembly? -
ANSWER✔✔2
How many test cocks are on an Atmospheric Vacuum Breaker? -ANSWER✔✔0
True/False: Test Gauges should be properly stored to ensure they are not damaged
when not in use. -ANSWER✔✔True
A Backflow Preventer for Beverage Dispensing Equipment protects against carbon
dioxide from entering the potable water supply from which type of backflow?
a) Backpressure
b) Backsiphonage
c) Both A & B
d) None of the above -ANSWER✔✔c) Both A & B
A Residential Dual Check Backflow Preventer has:
a) Two Independently Acting Checks
b) Two Independently Acting Checks and an Atmospheric Port
c) Two Independently Acting Checks with a relief valve
d) None of the Above -ANSWER✔✔a) Two Independently Acting Checks
What is the best form or method backflow prevention?
a) A Double Check Valve Assembly
b) A Reduced Pressure Backflow Assembly
c) A Reduced Pressure Detector Assembly
d) An Air Gap -ANSWER✔✔d) An Air Gap
GUIDE (CHARLESTON WATER
SYSTEMS) QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS 100%
CORRECT RATED A+
Q: Name the two types of backflow.
A: ✔✔ Backpressure and Backsiphonage
Q: All of the following may be considered acceptable for containment of a
building with the exception of a(n):
a) Air Gap
b) Double Check Valve Assembly
c) Residential Dual Check
d) Reduced Pressure Backflow Assembly
e) Pressure Vacuum Breaker Assembly
A: ✔✔ e) Pressure Vacuum Breaker Assembly
Q: A Reduced Pressure Backflow Assembly (RP) protects against:
a) High hazard, Backpressure
b) High hazard, Backsiphonage
c) Low hazard, Backpressure & Backsiphonage
d) All of the above
A: ✔✔ d) All of the above
How many test cocks are on a Reduced Pressure Backflow Assembly? -
ANSWER✔✔4
How many test cocks are on a Double Check Valve Assembly? -ANSWER✔✔4
, How many test cocks are on a Pressure Vacuum Breaker Assembly? -
ANSWER✔✔2
How many test cocks are on an Atmospheric Vacuum Breaker? -ANSWER✔✔0
True/False: Test Gauges should be properly stored to ensure they are not damaged
when not in use. -ANSWER✔✔True
A Backflow Preventer for Beverage Dispensing Equipment protects against carbon
dioxide from entering the potable water supply from which type of backflow?
a) Backpressure
b) Backsiphonage
c) Both A & B
d) None of the above -ANSWER✔✔c) Both A & B
A Residential Dual Check Backflow Preventer has:
a) Two Independently Acting Checks
b) Two Independently Acting Checks and an Atmospheric Port
c) Two Independently Acting Checks with a relief valve
d) None of the Above -ANSWER✔✔a) Two Independently Acting Checks
What is the best form or method backflow prevention?
a) A Double Check Valve Assembly
b) A Reduced Pressure Backflow Assembly
c) A Reduced Pressure Detector Assembly
d) An Air Gap -ANSWER✔✔d) An Air Gap
