BCIT STUDY BCWWA
The Check Valves of a Double Check Valve Assembly must be :
correct answersInternally Loaded
Which of the following backflow preventers offers effective protection under
backsiphonage conditions only and can also be subjected to constant full
line pressure
? correct answersSpill Resistant Type Pressure Vacuum Breaker
Which of the choices is best described as " a flow of water or other liquids
back into the potable water supply due to a negative or reduced pressure in
the supply piping ? " correct answersBacksiphonage
A residential " partial flow through " type fire sprinkler / standpipe system is
designed to circulate water in what portion ( s ) of the water system ?
correct answersSprinkler system main
The factory loaded spring tensions of the first and second check valves
found in a Reduced Pressure Principle Backflow Assembly are always :
correct answersPre - loaded different from one another
An Air Gap must be : correct answersTwice the pipe diameter with a
minimum of 1 inch separation
Upon completing test number one of a Double Check Valve Assembly ,
when using a differential pressure gauge in what position are the shut off
valves for the next test ? correct answersShutoff valve # 1 is open and
shutoff valve # 2 is closed
According to the AWWA Canadian CCC manual , the minimum vertical
distance from the bottom of a RP's relief valve to the finished floor level
should be ? correct answers300 mm ( 12 " )
The Dual Check Valve can be used to isolate which one of the following
applications ? correct answersResidential potable water systems with a
minor degree of hazard
Backflow prevention assemblies shall be field tested to a minimum
of : correct answersAnnually
preventers be installed before a fixed platform is to be provided below the
assembly ? To what maximum centerline height ( from the finished floor )
must testable backflow correct answers1500 mm ( 5 ' )
, Which backflow preventer contains a float check , a check seat and an air
inlet poppet ? correct answersAtmospheric Vacuum Breaker
The Pressure Vacuum Breaker Assembly may be used for backflow protection
for which of the following conditions ? correct answersBacksiphonage ;
severe hazard
How many test cocks are there on a Spill Resistant Type Pressure Vacuum
Breaker Assembly ? correct answersOne
When field testing a Pressure Vacuum Breaker Assembly installed close to
a ceiling , the gauge should : correct answersBe placed at the same level
as the assembly
During the first test of a Double Check Valve Assembly , it is found that water
continually runs from open test cock # 3. The bleed off valve arrangement is
opened and after a moment the water stops running out of the open bleed
off valve arrangement
, but continues to flow from test cock # 3. What is the most probable
problem ? correct answersShutoff valve # 2 and check valve # 2 are
leaking with backpressure
The spring in the relief valve of a Reduced Pressure Principle Backflow
Assembly is designed to : correct answersOpen the relief valve
When non - toxic antifreeze chemicals are added to a fire suppression system
, which of the following is required to protect the potable water supply ?
correct answersReduced Pressure Principle Backflow Assembly
The accuracy of differential test gauges used for field testing should be
checked : correct answersOn an annual basis .
A certified backflow assembly tester , is required to report backflow
prevention field te information to the : correct answersAdministrative
authority
An appropriately installed and working Atmospheric Vacuum Breaker , under
a backsiphonage condition , will cause the relief valve to : correct
answersFall in the open position
Undersized water service and distribution piping carrying water at high
velocities : correct answersMay cause backsiphonage due to the
aspirator effect
When testing a Pressure Vacuum Breaker Assembly , what must be done
after the air inlet opening point value has been obtained ? correct
answersDrain water from the assembly
Water continually flows from the open test cock # 2 , during the test of the
check valve on a Pressure Vacuum Breaker Assembly which has been
installed to requirements , this is an indication of a / an : correct
answersLeaking # 1 shutoff valve
The Check Valves of a Double Check Valve Assembly must be :
correct answersInternally Loaded
Which of the following backflow preventers offers effective protection under
backsiphonage conditions only and can also be subjected to constant full
line pressure
? correct answersSpill Resistant Type Pressure Vacuum Breaker
Which of the choices is best described as " a flow of water or other liquids
back into the potable water supply due to a negative or reduced pressure in
the supply piping ? " correct answersBacksiphonage
A residential " partial flow through " type fire sprinkler / standpipe system is
designed to circulate water in what portion ( s ) of the water system ?
correct answersSprinkler system main
The factory loaded spring tensions of the first and second check valves
found in a Reduced Pressure Principle Backflow Assembly are always :
correct answersPre - loaded different from one another
An Air Gap must be : correct answersTwice the pipe diameter with a
minimum of 1 inch separation
Upon completing test number one of a Double Check Valve Assembly ,
when using a differential pressure gauge in what position are the shut off
valves for the next test ? correct answersShutoff valve # 1 is open and
shutoff valve # 2 is closed
According to the AWWA Canadian CCC manual , the minimum vertical
distance from the bottom of a RP's relief valve to the finished floor level
should be ? correct answers300 mm ( 12 " )
The Dual Check Valve can be used to isolate which one of the following
applications ? correct answersResidential potable water systems with a
minor degree of hazard
Backflow prevention assemblies shall be field tested to a minimum
of : correct answersAnnually
preventers be installed before a fixed platform is to be provided below the
assembly ? To what maximum centerline height ( from the finished floor )
must testable backflow correct answers1500 mm ( 5 ' )
, Which backflow preventer contains a float check , a check seat and an air
inlet poppet ? correct answersAtmospheric Vacuum Breaker
The Pressure Vacuum Breaker Assembly may be used for backflow protection
for which of the following conditions ? correct answersBacksiphonage ;
severe hazard
How many test cocks are there on a Spill Resistant Type Pressure Vacuum
Breaker Assembly ? correct answersOne
When field testing a Pressure Vacuum Breaker Assembly installed close to
a ceiling , the gauge should : correct answersBe placed at the same level
as the assembly
During the first test of a Double Check Valve Assembly , it is found that water
continually runs from open test cock # 3. The bleed off valve arrangement is
opened and after a moment the water stops running out of the open bleed
off valve arrangement
, but continues to flow from test cock # 3. What is the most probable
problem ? correct answersShutoff valve # 2 and check valve # 2 are
leaking with backpressure
The spring in the relief valve of a Reduced Pressure Principle Backflow
Assembly is designed to : correct answersOpen the relief valve
When non - toxic antifreeze chemicals are added to a fire suppression system
, which of the following is required to protect the potable water supply ?
correct answersReduced Pressure Principle Backflow Assembly
The accuracy of differential test gauges used for field testing should be
checked : correct answersOn an annual basis .
A certified backflow assembly tester , is required to report backflow
prevention field te information to the : correct answersAdministrative
authority
An appropriately installed and working Atmospheric Vacuum Breaker , under
a backsiphonage condition , will cause the relief valve to : correct
answersFall in the open position
Undersized water service and distribution piping carrying water at high
velocities : correct answersMay cause backsiphonage due to the
aspirator effect
When testing a Pressure Vacuum Breaker Assembly , what must be done
after the air inlet opening point value has been obtained ? correct
answersDrain water from the assembly
Water continually flows from the open test cock # 2 , during the test of the
check valve on a Pressure Vacuum Breaker Assembly which has been
installed to requirements , this is an indication of a / an : correct
answersLeaking # 1 shutoff valve
