Backflow Repair Technician Certification Exam
(ASSE 5130) Exam Questions and Correct Answers
Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. What is the primary purpose of a backflow preventer?
A. Increase water pressure
B. Prevent contamination of potable water
C. Store water
D. Filter debris
Answer: B
Rationale: Backflow preventers are designed to stop contaminated
water from flowing back into the clean water supply.
2. Backflow occurs due to which two main conditions?
A. Filtration and pressure
B. Backpressure and backsiphonage
C. Gravity and velocity
,D. Temperature and density
Answer: B
Rationale: Backflow is caused by either backpressure or backsiphonage
conditions.
3. Which device is commonly used for high hazard applications?
A. Double Check Valve Assembly (DCVA)
B. Reduced Pressure Zone Assembly (RPZ)
C. Atmospheric Vacuum Breaker (AVB)
D. Hose Bibb
Answer: B
Rationale: RPZ assemblies provide the highest level of protection for
high hazard situations.
4. What is a key component of an RPZ assembly?
A. Air compressor
B. Relief valve
C. Filter cartridge
D. Expansion tank
Answer: B
,Rationale: The relief valve is essential for discharging water when
pressure conditions indicate failure.
5. What does “backsiphonage” refer to?
A. Water flowing uphill
B. Reverse flow due to vacuum
C. Increased pressure downstream
D. Pump failure
Answer: B
Rationale: Backsiphonage occurs when negative pressure draws
contaminated water into the system.
6. What is the function of check valves in a DCVA?
A. Increase flow rate
B. Prevent reverse flow
C. Reduce temperature
D. Filter solids
Answer: B
Rationale: Check valves allow flow in one direction and prevent reverse
flow.
, 7. What should be done before repairing a backflow assembly?
A. Increase pressure
B. Shut off water supply
C. Add chemicals
D. Open all valves
Answer: B
Rationale: Isolating the assembly ensures safe repair conditions.
8. What is the purpose of test cocks?
A. Drain water
B. Measure pressure
C. Add chemicals
D. Increase flow
Answer: B
Rationale: Test cocks allow technicians to connect gauges and test
pressure zones.
9. What indicates a leaking check valve in an RPZ?
(ASSE 5130) Exam Questions and Correct Answers
Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. What is the primary purpose of a backflow preventer?
A. Increase water pressure
B. Prevent contamination of potable water
C. Store water
D. Filter debris
Answer: B
Rationale: Backflow preventers are designed to stop contaminated
water from flowing back into the clean water supply.
2. Backflow occurs due to which two main conditions?
A. Filtration and pressure
B. Backpressure and backsiphonage
C. Gravity and velocity
,D. Temperature and density
Answer: B
Rationale: Backflow is caused by either backpressure or backsiphonage
conditions.
3. Which device is commonly used for high hazard applications?
A. Double Check Valve Assembly (DCVA)
B. Reduced Pressure Zone Assembly (RPZ)
C. Atmospheric Vacuum Breaker (AVB)
D. Hose Bibb
Answer: B
Rationale: RPZ assemblies provide the highest level of protection for
high hazard situations.
4. What is a key component of an RPZ assembly?
A. Air compressor
B. Relief valve
C. Filter cartridge
D. Expansion tank
Answer: B
,Rationale: The relief valve is essential for discharging water when
pressure conditions indicate failure.
5. What does “backsiphonage” refer to?
A. Water flowing uphill
B. Reverse flow due to vacuum
C. Increased pressure downstream
D. Pump failure
Answer: B
Rationale: Backsiphonage occurs when negative pressure draws
contaminated water into the system.
6. What is the function of check valves in a DCVA?
A. Increase flow rate
B. Prevent reverse flow
C. Reduce temperature
D. Filter solids
Answer: B
Rationale: Check valves allow flow in one direction and prevent reverse
flow.
, 7. What should be done before repairing a backflow assembly?
A. Increase pressure
B. Shut off water supply
C. Add chemicals
D. Open all valves
Answer: B
Rationale: Isolating the assembly ensures safe repair conditions.
8. What is the purpose of test cocks?
A. Drain water
B. Measure pressure
C. Add chemicals
D. Increase flow
Answer: B
Rationale: Test cocks allow technicians to connect gauges and test
pressure zones.
9. What indicates a leaking check valve in an RPZ?
