BACKFLOW EXAM QUESTION WITH
CORRECT ANSWERS
Double Check Valve Assembly - Correct Answers -A testable mechanical device
consisting of two independently operating, spring-loaded check valves, four test cocks,
and two full port shut off valves
the purpose of an ASSE 1018 trap primer is to - Correct Answers -maintain a trap seal
a laboratory faucet vacuum breaker must contain - Correct Answers -two independently
acting check valves
ASSE 1060 - Correct Answers -outdoor enclosures standard, freeze protective
enclosures must provide protection to a remedies of -30 f
device - Correct Answers -a backflow prevents generally consisting of a single valve
body not capable of being field tested using a differential gauge
to stop a siphonic actin within a potable water system, we must - Correct Answers -
admit air into the system
waterborne diseases - Correct Answers -typhoid, cholera and giardiasis
a double check detector assembly installed on a antifreeze loop area requires - Correct
Answers -replacement
removal of the relief valve spring on a reduced pressure principle assembly will cause
the assembly to - Correct Answers -become a approved double check valve assembly
when testing the first check valve in the direction of flow on a reduced pressure
assembly using a sight tube the tube must be a minimum of - Correct Answers -138.75
continuing discharge for a reduced pressure principle assembly during a no flow
condition may be caused by - Correct Answers -a debris fouling the number one check
valve
a hose bib connection is required to have a permanently installed - Correct Answers -
atmospheric vacuum breaker
, Atmospheric Vacuum Breakers must not be subject to continuous water pressure for
more than - Correct Answers -12hrs
a submerged atmospheric vacuum breaker may be considered a - Correct Answers -
cross connection
flow from the outlet of an atmospheric vacuum breaker must not reach a - Correct
Answers -valve
negligence - Correct Answers -not meeting ones responsibility and causing harm
residual pressure - Correct Answers -the pressure available at a fixture or water outlet
after allowances are made for pressure
natural or propane fires domestic water heatersbare protected from excess pressure by
the installation of a.. - Correct Answers -thermal expansion tank
installation of backflow assemblies results in - Correct Answers -decrease in system
water pressure
according to the manufacturers instructions valve levers on a t&p relief valve should be
operated at least - Correct Answers -every 12 months
the installation of backflow asswmblies result in - Correct Answers -velocity spike
when installaing a thermal expanaion tank, you should always - Correct Answers -match
the tank air pressure to the syatem water pressure
what assembly creates a closed water system - Correct Answers -prz, double check
valve assembly, pressure reducing valve, dual check valve
relief valves according to manufacture instructions must be inspected - Correct Answers
-every three months
temperture and pressure relief valves on domestic water equipment should be sized
based on - Correct Answers -btu input, water volume
whats not allowed on a irrigation system - Correct Answers -double check
how do you calculate pressure at the bottom of 60 ft - Correct Answers -60÷.433
negative gauge pressure - Correct Answers -high usuage
test cock sizes - Correct Answers -1/4-3/4
a dual check - Correct Answers -device
CORRECT ANSWERS
Double Check Valve Assembly - Correct Answers -A testable mechanical device
consisting of two independently operating, spring-loaded check valves, four test cocks,
and two full port shut off valves
the purpose of an ASSE 1018 trap primer is to - Correct Answers -maintain a trap seal
a laboratory faucet vacuum breaker must contain - Correct Answers -two independently
acting check valves
ASSE 1060 - Correct Answers -outdoor enclosures standard, freeze protective
enclosures must provide protection to a remedies of -30 f
device - Correct Answers -a backflow prevents generally consisting of a single valve
body not capable of being field tested using a differential gauge
to stop a siphonic actin within a potable water system, we must - Correct Answers -
admit air into the system
waterborne diseases - Correct Answers -typhoid, cholera and giardiasis
a double check detector assembly installed on a antifreeze loop area requires - Correct
Answers -replacement
removal of the relief valve spring on a reduced pressure principle assembly will cause
the assembly to - Correct Answers -become a approved double check valve assembly
when testing the first check valve in the direction of flow on a reduced pressure
assembly using a sight tube the tube must be a minimum of - Correct Answers -138.75
continuing discharge for a reduced pressure principle assembly during a no flow
condition may be caused by - Correct Answers -a debris fouling the number one check
valve
a hose bib connection is required to have a permanently installed - Correct Answers -
atmospheric vacuum breaker
, Atmospheric Vacuum Breakers must not be subject to continuous water pressure for
more than - Correct Answers -12hrs
a submerged atmospheric vacuum breaker may be considered a - Correct Answers -
cross connection
flow from the outlet of an atmospheric vacuum breaker must not reach a - Correct
Answers -valve
negligence - Correct Answers -not meeting ones responsibility and causing harm
residual pressure - Correct Answers -the pressure available at a fixture or water outlet
after allowances are made for pressure
natural or propane fires domestic water heatersbare protected from excess pressure by
the installation of a.. - Correct Answers -thermal expansion tank
installation of backflow assemblies results in - Correct Answers -decrease in system
water pressure
according to the manufacturers instructions valve levers on a t&p relief valve should be
operated at least - Correct Answers -every 12 months
the installation of backflow asswmblies result in - Correct Answers -velocity spike
when installaing a thermal expanaion tank, you should always - Correct Answers -match
the tank air pressure to the syatem water pressure
what assembly creates a closed water system - Correct Answers -prz, double check
valve assembly, pressure reducing valve, dual check valve
relief valves according to manufacture instructions must be inspected - Correct Answers
-every three months
temperture and pressure relief valves on domestic water equipment should be sized
based on - Correct Answers -btu input, water volume
whats not allowed on a irrigation system - Correct Answers -double check
how do you calculate pressure at the bottom of 60 ft - Correct Answers -60÷.433
negative gauge pressure - Correct Answers -high usuage
test cock sizes - Correct Answers -1/4-3/4
a dual check - Correct Answers -device
