BACKFLOW EXAM 2026 ACTUAL EXAM
QUESTIONS AND CORRECT ANSWERS
◉ Double check valve assembly product performance standards
require venting for _____?
A. Chemicals
B. Test cock corrosion
C. Trapped air
D. Vertical installations
E. Winterization. Answer: Trapped air
◉ A low-hazard use only backflow preventer is a(n) _____?
A. Air-gap separation
B. Atmospheric vacuum breaker
C. Double check valve assembly
D. Pressure vacuum breaker assembly
E. Reduced pressure principle assembly. Answer: Double check valve
assembly
◉ Double check detector assembly flow indicators must register
flow up to _____?
A. 1 gpm (3.8 l/min)
,B. 2 gpm (7.6 l/min)
C. 3 gpm (11.4 l/min)
D. 4 gpm (15.1 l/min)
E. 5 gpm (18.9 l/min). Answer: 2 gpm (7.6 l/min)
◉ A field test report for a double check valve assembly will include
the manufacturer's name, model, size, and _____?
A. Body material
B. Date of manufacture
C. Serial number
D. Working pressure (maximum)
E. Working temperature (maximum). Answer: Serial number
◉ Double check valve assembly components must be _____?
A. Bronze
B. Independently acting
C. Plastic
D. Rubber
E. Spring activated. Answer: Independently acting
◉ After the repair of a double check valve assembly, a field test is
required for the _____?
, A. Check valve number 1
B. Component repaired
C. Entire assembly
D. Tester's personal records only
E. Shut-off valve tightness. Answer: Entire assembly
◉ Prior to testing the check valves in the direction of flow on a
double check valve assembly using a high and low side on the gauge,
a tester must first ____?
A. Determine the tightness of shut-off valve number 2
B. Notify the owner of the water shut-off
C. Record the water supply line pressure
D. Submit the test report to the water supply
E. Test check valve number 2 with backpressure. Answer: Determine
the tightness of shut-off valve number 2
◉ A double check valve assembly installed in a vertical flow down
orientation is only allowed ______?
A. In a basement or vault
B. If the assembly was tested and approved as such
C. If the check weight does not compress the spring
D. On fire-suppression systems
QUESTIONS AND CORRECT ANSWERS
◉ Double check valve assembly product performance standards
require venting for _____?
A. Chemicals
B. Test cock corrosion
C. Trapped air
D. Vertical installations
E. Winterization. Answer: Trapped air
◉ A low-hazard use only backflow preventer is a(n) _____?
A. Air-gap separation
B. Atmospheric vacuum breaker
C. Double check valve assembly
D. Pressure vacuum breaker assembly
E. Reduced pressure principle assembly. Answer: Double check valve
assembly
◉ Double check detector assembly flow indicators must register
flow up to _____?
A. 1 gpm (3.8 l/min)
,B. 2 gpm (7.6 l/min)
C. 3 gpm (11.4 l/min)
D. 4 gpm (15.1 l/min)
E. 5 gpm (18.9 l/min). Answer: 2 gpm (7.6 l/min)
◉ A field test report for a double check valve assembly will include
the manufacturer's name, model, size, and _____?
A. Body material
B. Date of manufacture
C. Serial number
D. Working pressure (maximum)
E. Working temperature (maximum). Answer: Serial number
◉ Double check valve assembly components must be _____?
A. Bronze
B. Independently acting
C. Plastic
D. Rubber
E. Spring activated. Answer: Independently acting
◉ After the repair of a double check valve assembly, a field test is
required for the _____?
, A. Check valve number 1
B. Component repaired
C. Entire assembly
D. Tester's personal records only
E. Shut-off valve tightness. Answer: Entire assembly
◉ Prior to testing the check valves in the direction of flow on a
double check valve assembly using a high and low side on the gauge,
a tester must first ____?
A. Determine the tightness of shut-off valve number 2
B. Notify the owner of the water shut-off
C. Record the water supply line pressure
D. Submit the test report to the water supply
E. Test check valve number 2 with backpressure. Answer: Determine
the tightness of shut-off valve number 2
◉ A double check valve assembly installed in a vertical flow down
orientation is only allowed ______?
A. In a basement or vault
B. If the assembly was tested and approved as such
C. If the check weight does not compress the spring
D. On fire-suppression systems
