BACKFLOW PREVENTION ASSEMBLY QUALIFICATION
EXAM LATEST 2026 VERSION WITH 100 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+||BRAND NEW VERSION!!
1. What is the primary purpose of a backflow prevention assembly?
A. To regulate water pressure
B. To prevent contamination of the potable water supply
C. To measure water flow
D. To filter debris from water
B. To prevent contamination of the potable water supply Prevents
backflow, protecting the public water system from contaminants.
2. Which of the following assemblies is commonly used for high hazard
situations?
A. Double check valve assembly (DCVA)
B. Pressure vacuum breaker (PVB)
C. Reduced pressure principle assembly (RP)
D. Atmospheric vacuum breaker (AVB)
C. Reduced pressure principle assembly (RP) It provides the highest level of
protection against both backpressure and backsiphonage.
3. What type of hazard does a double check valve assembly primarily protect
against?
A. Low hazard
B. High hazard
C. Both high and low hazards
D. No hazard
A. Low hazard Double check valves are suitable for low to moderate hazard
situations where contaminants are not toxic.
4. Where should a pressure vacuum breaker (PVB) be installed?
A. Below ground
, B. On irrigation systems above the highest point of water outlet
C. Inside the building
D. In potable water main lines
B. On irrigation systems above the highest point of water outlet PVBs must
be installed where they remain above the downstream water outlet to
prevent backsiphonage.
5. How often should a reduced pressure principle (RP) assembly be tested?
A. Monthly
B. Annually
C. Every five years
D. Only when installed
B. Annually RP assemblies require yearly inspection and testing to ensure
proper operation.
6. Which of the following indicates a failed check valve in a backflow
assembly?
A. Constant leakage
B. Normal flow
C. No water flow
D. Pressure increase
A. Constant leakage A leaking check valve can allow backflow, indicating
the assembly needs repair.
7. What is the primary difference between a double check valve (DCV) and a
reduced pressure principle (RP) assembly?
A. RP assemblies are only for residential use
B. DCVs protect against high hazard contaminants
C. RP assemblies provide higher protection against both backsiphonage and
backpressure
D. DCVs require annual testing
C. RP assemblies provide higher protection against both backsiphonage
and backpressure RP assemblies are designed for high hazard conditions
and provide superior protection.
, 8. What is a common sign of backpressure backflow?
A. Water flowing backward due to higher downstream pressure
B. Water flowing slowly
C. No water flow
D. Bubbling at faucets
A. Water flowing backward due to higher downstream pressure
Backpressure occurs when downstream pressure exceeds supply pressure,
forcing water back into the potable system.
9. Which backflow prevention device is typically not suitable for continuous
pressure?
A. Atmospheric vacuum breaker (AVB)
B. Reduced pressure assembly (RP)
C. Double check valve assembly (DCVA)
D. Pressure vacuum breaker (PVB)
A. Atmospheric vacuum breaker (AVB) AVBs cannot be installed under
continuous pressure because it may fail to prevent backflow.
10.What maintenance task is required for all mechanical backflow assemblies?
A. Painting the exterior
B. Annual testing
C. Lubrication only
D. Replacement every 10 years
B. Annual testing All mechanical assemblies require regular testing to
ensure proper functioning.
11.Which component is unique to a reduced pressure (RP) assembly?
A. Two check valves
B. Relief valve
C. Shutoff valves
D. Test cocks
B. Relief valve The relief valve is a key feature of RP assemblies, discharging
water when backflow occurs.
EXAM LATEST 2026 VERSION WITH 100 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+||BRAND NEW VERSION!!
1. What is the primary purpose of a backflow prevention assembly?
A. To regulate water pressure
B. To prevent contamination of the potable water supply
C. To measure water flow
D. To filter debris from water
B. To prevent contamination of the potable water supply Prevents
backflow, protecting the public water system from contaminants.
2. Which of the following assemblies is commonly used for high hazard
situations?
A. Double check valve assembly (DCVA)
B. Pressure vacuum breaker (PVB)
C. Reduced pressure principle assembly (RP)
D. Atmospheric vacuum breaker (AVB)
C. Reduced pressure principle assembly (RP) It provides the highest level of
protection against both backpressure and backsiphonage.
3. What type of hazard does a double check valve assembly primarily protect
against?
A. Low hazard
B. High hazard
C. Both high and low hazards
D. No hazard
A. Low hazard Double check valves are suitable for low to moderate hazard
situations where contaminants are not toxic.
4. Where should a pressure vacuum breaker (PVB) be installed?
A. Below ground
, B. On irrigation systems above the highest point of water outlet
C. Inside the building
D. In potable water main lines
B. On irrigation systems above the highest point of water outlet PVBs must
be installed where they remain above the downstream water outlet to
prevent backsiphonage.
5. How often should a reduced pressure principle (RP) assembly be tested?
A. Monthly
B. Annually
C. Every five years
D. Only when installed
B. Annually RP assemblies require yearly inspection and testing to ensure
proper operation.
6. Which of the following indicates a failed check valve in a backflow
assembly?
A. Constant leakage
B. Normal flow
C. No water flow
D. Pressure increase
A. Constant leakage A leaking check valve can allow backflow, indicating
the assembly needs repair.
7. What is the primary difference between a double check valve (DCV) and a
reduced pressure principle (RP) assembly?
A. RP assemblies are only for residential use
B. DCVs protect against high hazard contaminants
C. RP assemblies provide higher protection against both backsiphonage and
backpressure
D. DCVs require annual testing
C. RP assemblies provide higher protection against both backsiphonage
and backpressure RP assemblies are designed for high hazard conditions
and provide superior protection.
, 8. What is a common sign of backpressure backflow?
A. Water flowing backward due to higher downstream pressure
B. Water flowing slowly
C. No water flow
D. Bubbling at faucets
A. Water flowing backward due to higher downstream pressure
Backpressure occurs when downstream pressure exceeds supply pressure,
forcing water back into the potable system.
9. Which backflow prevention device is typically not suitable for continuous
pressure?
A. Atmospheric vacuum breaker (AVB)
B. Reduced pressure assembly (RP)
C. Double check valve assembly (DCVA)
D. Pressure vacuum breaker (PVB)
A. Atmospheric vacuum breaker (AVB) AVBs cannot be installed under
continuous pressure because it may fail to prevent backflow.
10.What maintenance task is required for all mechanical backflow assemblies?
A. Painting the exterior
B. Annual testing
C. Lubrication only
D. Replacement every 10 years
B. Annual testing All mechanical assemblies require regular testing to
ensure proper functioning.
11.Which component is unique to a reduced pressure (RP) assembly?
A. Two check valves
B. Relief valve
C. Shutoff valves
D. Test cocks
B. Relief valve The relief valve is a key feature of RP assemblies, discharging
water when backflow occurs.
