Backflow Prevention Practice Exam Questions With
Complete Solutions
A backflow preventer creates a closed plumbing
system that requires the installation of a(n) _____?
A. Expansion tank
B. Globe valve
C. Pressure reducing valve
D. Temperature and pressure relief valve
E. Utility box key Correct Answers Expansion tank
A barometric loop must be installed 35 ft (10.7 m)
above the highest ____?
A. Boiler
B. Fixture outlet
C. Gate valve
D. Service connection
E. Water meter Correct Answers Fixture outlet
A check valve field test reported value of 0.8 psid
(5.5 kPa) suggests _____?
A. A passing check valve
B. A broken or failed spring
C. Debris in the check seat
D. Disc softening or decay
E. Low water pressure Correct Answers Disc
softening or decay
A common backflow preventer on a double-wall
heat exchanger with leak detection is ____?
,A. An air-gap separation
B. An atmospheric vacuum breaker
C. A double check valve assembly
D. A reduced pressure principle assembly
E. Nothing Correct Answers Nothing
A cross-connection may be a permanent piping
arrangement or a(n) ____?
A. Backflow preventer
B. Church symbol
C. OSHA hazardous area designation
D. Railroad and highway intersection sign
E. Temporary hose bibb connection Correct
Answers Temporary hose bibb connection
A deck-mounted atmospheric vacuum breaker's
critical installation level is above the outlet usage
by ___?
A. 1 in. (2.5 cm)
B. 3 in. (7.6 cm)
C. 6 in. (15 cm)
D. 12 in. (30 cm)
E. 18 in. (46 cm) Correct Answers 1 in. (2.5 cm)
A differential pressure gauge reading of 0.2 psid is
represented on water column sight tube by _____?
A. 1/16 in. (0.16 cm)
B. 1/2 in. (1.3 cm)
C. 2 in. (5.1 cm)
D. 3.5 in. (8.9 cm)
,E. 5.5 in. (14 cm) Correct Answers 5.5 in. (14 cm)
A direct cross-connection suggests the piping
system may be subjected to ____?
A. Backpressure or backsiphonage
B. Backsiphonage only
C. Periodic inspection
D. Sustained pressure
E. Toxic materials Correct Answers Backpressure
or backsiphonage
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
E. On water supply service connections Correct
Answers If the assembly was tested and approved
as such
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 Correct Answers Maintenance
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) Correct
Answers Serial number
A fire sprinkler system's backflow protection for a
black-iron pipe system is typically ____?
A. An air-gap separation
B. A double check valve assembly
C. A reduced pressure principle assembly
D. A reduced pressure detector assembly
E. No protection required Correct Answers A
double check valve assembly
A hose connection vacuum breaker's maintenance
includes _____?
A. Check disc replacement
B. Diaphragm replacement
C. Draining for winterization
D. Replacement every 2 years
E. Water flushing Correct Answers Draining for
winterization
Complete Solutions
A backflow preventer creates a closed plumbing
system that requires the installation of a(n) _____?
A. Expansion tank
B. Globe valve
C. Pressure reducing valve
D. Temperature and pressure relief valve
E. Utility box key Correct Answers Expansion tank
A barometric loop must be installed 35 ft (10.7 m)
above the highest ____?
A. Boiler
B. Fixture outlet
C. Gate valve
D. Service connection
E. Water meter Correct Answers Fixture outlet
A check valve field test reported value of 0.8 psid
(5.5 kPa) suggests _____?
A. A passing check valve
B. A broken or failed spring
C. Debris in the check seat
D. Disc softening or decay
E. Low water pressure Correct Answers Disc
softening or decay
A common backflow preventer on a double-wall
heat exchanger with leak detection is ____?
,A. An air-gap separation
B. An atmospheric vacuum breaker
C. A double check valve assembly
D. A reduced pressure principle assembly
E. Nothing Correct Answers Nothing
A cross-connection may be a permanent piping
arrangement or a(n) ____?
A. Backflow preventer
B. Church symbol
C. OSHA hazardous area designation
D. Railroad and highway intersection sign
E. Temporary hose bibb connection Correct
Answers Temporary hose bibb connection
A deck-mounted atmospheric vacuum breaker's
critical installation level is above the outlet usage
by ___?
A. 1 in. (2.5 cm)
B. 3 in. (7.6 cm)
C. 6 in. (15 cm)
D. 12 in. (30 cm)
E. 18 in. (46 cm) Correct Answers 1 in. (2.5 cm)
A differential pressure gauge reading of 0.2 psid is
represented on water column sight tube by _____?
A. 1/16 in. (0.16 cm)
B. 1/2 in. (1.3 cm)
C. 2 in. (5.1 cm)
D. 3.5 in. (8.9 cm)
,E. 5.5 in. (14 cm) Correct Answers 5.5 in. (14 cm)
A direct cross-connection suggests the piping
system may be subjected to ____?
A. Backpressure or backsiphonage
B. Backsiphonage only
C. Periodic inspection
D. Sustained pressure
E. Toxic materials Correct Answers Backpressure
or backsiphonage
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
E. On water supply service connections Correct
Answers If the assembly was tested and approved
as such
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 Correct Answers Maintenance
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) Correct
Answers Serial number
A fire sprinkler system's backflow protection for a
black-iron pipe system is typically ____?
A. An air-gap separation
B. A double check valve assembly
C. A reduced pressure principle assembly
D. A reduced pressure detector assembly
E. No protection required Correct Answers A
double check valve assembly
A hose connection vacuum breaker's maintenance
includes _____?
A. Check disc replacement
B. Diaphragm replacement
C. Draining for winterization
D. Replacement every 2 years
E. Water flushing Correct Answers Draining for
winterization
