Backflow '23 - Reduced Pressure Backflow Preventer
(RPB) questions with accurate answers
A check valve in an approved backflow prevention assembly must be
drip tight when _____. Ans✓✓✓ The device is subject to any backflow.
A permanent platform for access must be built if the device is more than
_____above the floor. Ans✓✓✓ 5'
A Reduced pressure backflow device is the safest form of backflow
prevention EXCEPT for a(n) _____ Ans✓✓✓ Air Gap
A Reduced Pressure Principle Backflow Preventer's (ASSE 1013) relief
valve operates from the inlet water pressure and the water pressure at
the: Ans✓✓✓ intermediate zone pressure
ASSE _____ Ans✓✓✓ 1013
Backpressure to a reduced pressure principle assembly fouled check
valve number 2 will likely ___. Ans✓✓✓ force the relief valve to open
and discharg
Cold water models have a maximum temperature rating of _____
degrees Ans✓✓✓ 110 F
During a no flow situation an RPBP develops a fouled # 1 check valve
that has a piece of solder stuck in the seat, what is the likely result
, Ans✓✓✓ Water from the supply side inlet will leak past check valve #
1 into the reduced pressure zone thus increasing the reduced zone
pressure and forcing the relief valve open
During a static condition a fouled #2 check valve shall cause a Reduced
Pressure Principle Backflow Assembly (ASSE 1013) to: Ans✓✓✓ Do
nothing
(With a fouled or leaking #2 check valve, the reduced pressure zone
between ck 1 and 2 would remain unaffected and the device would do
nothing)
Full flow of full port valves are required on all Reduced Pressure
Principle Backflow Preventers (ASSE 1013) and Double Check
Backflow Prevention Assemblies (ASSE 1015) to: Ans✓✓✓ -Eliminate
additional pressure loss
-Promote laminar or smooth flow
-Reduce turbulence
Hot water models have a maximum temperature rating of _____ degrees.
Ans✓✓✓ 180 F
If a reduced pressure principle assembly's field test shows a leaking
shut-off valve 2, the leak may be compensated by obtaining water
pressure/flow from ___. Ans✓✓✓ test cock number 1
(RPB) questions with accurate answers
A check valve in an approved backflow prevention assembly must be
drip tight when _____. Ans✓✓✓ The device is subject to any backflow.
A permanent platform for access must be built if the device is more than
_____above the floor. Ans✓✓✓ 5'
A Reduced pressure backflow device is the safest form of backflow
prevention EXCEPT for a(n) _____ Ans✓✓✓ Air Gap
A Reduced Pressure Principle Backflow Preventer's (ASSE 1013) relief
valve operates from the inlet water pressure and the water pressure at
the: Ans✓✓✓ intermediate zone pressure
ASSE _____ Ans✓✓✓ 1013
Backpressure to a reduced pressure principle assembly fouled check
valve number 2 will likely ___. Ans✓✓✓ force the relief valve to open
and discharg
Cold water models have a maximum temperature rating of _____
degrees Ans✓✓✓ 110 F
During a no flow situation an RPBP develops a fouled # 1 check valve
that has a piece of solder stuck in the seat, what is the likely result
, Ans✓✓✓ Water from the supply side inlet will leak past check valve #
1 into the reduced pressure zone thus increasing the reduced zone
pressure and forcing the relief valve open
During a static condition a fouled #2 check valve shall cause a Reduced
Pressure Principle Backflow Assembly (ASSE 1013) to: Ans✓✓✓ Do
nothing
(With a fouled or leaking #2 check valve, the reduced pressure zone
between ck 1 and 2 would remain unaffected and the device would do
nothing)
Full flow of full port valves are required on all Reduced Pressure
Principle Backflow Preventers (ASSE 1013) and Double Check
Backflow Prevention Assemblies (ASSE 1015) to: Ans✓✓✓ -Eliminate
additional pressure loss
-Promote laminar or smooth flow
-Reduce turbulence
Hot water models have a maximum temperature rating of _____ degrees.
Ans✓✓✓ 180 F
If a reduced pressure principle assembly's field test shows a leaking
shut-off valve 2, the leak may be compensated by obtaining water
pressure/flow from ___. Ans✓✓✓ test cock number 1
