BACKFLOW PREVENTION ALL REVIEW EXAM
QUESTIONS AND ANSWERS SURE A+
✔✔An indication that a pressure vacuum breaker is undersized for its application is
_____?
A. Air-inlet valve leakage
B. Bonnet distortion
C. Chatter or noise during flow
D. Disc pitting
E. Spring elongation - ✔✔Chatter or noise during flow
✔✔Continuous flow from a pressure vacuum breaker's test cock 2 with shut-off valve 2
open and shut-off valve 1 closed is an indication of _____?
A. Backpressure backflow
B. Backsiphonage backflow
C. A failed air-inlet valve
D. A leaking check valve
E. A leaking or damaged shut-off valve 1 - ✔✔Backpressure backflow
✔✔Pressure vacuum breakers may be used on the following applications except ____?
A. High hazard/backsiphonage
B. High hazard/continuous pressure
C. Low hazard/backpressure
, D. Low hazard/backsiphonage
E. Low hazard/intermittent pressure - ✔✔Low hazard/backpressure
✔✔A double check valve assembly is installed 12 in. (30.5 cm) above the floor for
_____?
A. Electrical code compliance
B. Floor draining
C. Maintenance
D. Mechanical code compliance
E. Rodent control - ✔✔Maintenance
✔✔Double check valve assembly product performance standards require venting for
_____?
A. Chemicals
B. Test cock corrosion
C. Trapped air
D. Vertical installations
E. Winterization - ✔✔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 - ✔✔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) - ✔✔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) - ✔✔Serial number
✔✔Double check valve assembly components must be _____?
A. Bronze
B. Independently acting
C. Plastic
QUESTIONS AND ANSWERS SURE A+
✔✔An indication that a pressure vacuum breaker is undersized for its application is
_____?
A. Air-inlet valve leakage
B. Bonnet distortion
C. Chatter or noise during flow
D. Disc pitting
E. Spring elongation - ✔✔Chatter or noise during flow
✔✔Continuous flow from a pressure vacuum breaker's test cock 2 with shut-off valve 2
open and shut-off valve 1 closed is an indication of _____?
A. Backpressure backflow
B. Backsiphonage backflow
C. A failed air-inlet valve
D. A leaking check valve
E. A leaking or damaged shut-off valve 1 - ✔✔Backpressure backflow
✔✔Pressure vacuum breakers may be used on the following applications except ____?
A. High hazard/backsiphonage
B. High hazard/continuous pressure
C. Low hazard/backpressure
, D. Low hazard/backsiphonage
E. Low hazard/intermittent pressure - ✔✔Low hazard/backpressure
✔✔A double check valve assembly is installed 12 in. (30.5 cm) above the floor for
_____?
A. Electrical code compliance
B. Floor draining
C. Maintenance
D. Mechanical code compliance
E. Rodent control - ✔✔Maintenance
✔✔Double check valve assembly product performance standards require venting for
_____?
A. Chemicals
B. Test cock corrosion
C. Trapped air
D. Vertical installations
E. Winterization - ✔✔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 - ✔✔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) - ✔✔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) - ✔✔Serial number
✔✔Double check valve assembly components must be _____?
A. Bronze
B. Independently acting
C. Plastic
