BACKFLOW EXAM QUESTIONS WITH
VERIFIED ANSWERS
a backflow preventer installed prior to any branch in the piping system is known as
ANSW✅✅containment assembly
an accessible location ANSW✅✅
containing a plumbing system from the public water supply requires backflow at the
ANSW✅✅service connection
backflow manufactures recommend that assemblies be field tested when ANSW✅✅repaired or
installed
a differential pressure gauge readibg of 0.2 psid is represented on a water coloumn sight tube by
ANSW✅✅5.5in (14cm)
pollution of a public water supply suggests the substance in the water is ANSW✅✅aesthetically
bad
backsiphonage may occur when the pressure inside copper tubing is ANSW✅✅less than
atmospheric pressure
a cross connection may be a permanent piping arrangement or a ANSW✅✅temporary hose Bibb
connection
the isolation of a plumbing water system hazard requires ANSW✅✅appliance protection
a direct cross connection suggests the piping system may be subjected to ANSW✅✅back pressure
or backsiphonage
a pipes restrictions flow velocity increase may allow ANSW✅✅aspiration
, water supply contamination from backflow may result in ANSW✅✅death
allows air into the outlet piping system to prevent backflow ANSW✅✅atmospheric vaccum
breaker
Atmospheric Vacuum Breakers will typically be located on ANSW✅✅plumbing fixtures or
appliances
the mechanical component of an atmospheric vacuum breaker serves as an air inlet valve and a
ANSW✅✅check valve
a deck mounted avbs critical installation level is above the outlet usage by ANSW✅✅1 in (2.5cm)
a hose bib connection is required to have a permanently installed ANSW✅✅atmospheric vacuum
breaker
Atmospheric Vacuum Breakers must not be subject to continuous water pressure for more than
ANSW✅✅12hrs
a submerged atmospheric vacuum breaker may be considered a ANSW✅✅cross connection
flow from the outlet of an atmospheric vacuum breaker must not reach a ANSW✅✅valve
an atmospheric vacuum breaker is not required to have a ANSW✅✅annula field test
the air inlet valve of an atmospheric vacuum breaker is held closed by ANSW✅✅water pressure
ANSW✅✅14.7+gau
1974 ANSW✅✅clean water act
VERIFIED ANSWERS
a backflow preventer installed prior to any branch in the piping system is known as
ANSW✅✅containment assembly
an accessible location ANSW✅✅
containing a plumbing system from the public water supply requires backflow at the
ANSW✅✅service connection
backflow manufactures recommend that assemblies be field tested when ANSW✅✅repaired or
installed
a differential pressure gauge readibg of 0.2 psid is represented on a water coloumn sight tube by
ANSW✅✅5.5in (14cm)
pollution of a public water supply suggests the substance in the water is ANSW✅✅aesthetically
bad
backsiphonage may occur when the pressure inside copper tubing is ANSW✅✅less than
atmospheric pressure
a cross connection may be a permanent piping arrangement or a ANSW✅✅temporary hose Bibb
connection
the isolation of a plumbing water system hazard requires ANSW✅✅appliance protection
a direct cross connection suggests the piping system may be subjected to ANSW✅✅back pressure
or backsiphonage
a pipes restrictions flow velocity increase may allow ANSW✅✅aspiration
, water supply contamination from backflow may result in ANSW✅✅death
allows air into the outlet piping system to prevent backflow ANSW✅✅atmospheric vaccum
breaker
Atmospheric Vacuum Breakers will typically be located on ANSW✅✅plumbing fixtures or
appliances
the mechanical component of an atmospheric vacuum breaker serves as an air inlet valve and a
ANSW✅✅check valve
a deck mounted avbs critical installation level is above the outlet usage by ANSW✅✅1 in (2.5cm)
a hose bib connection is required to have a permanently installed ANSW✅✅atmospheric vacuum
breaker
Atmospheric Vacuum Breakers must not be subject to continuous water pressure for more than
ANSW✅✅12hrs
a submerged atmospheric vacuum breaker may be considered a ANSW✅✅cross connection
flow from the outlet of an atmospheric vacuum breaker must not reach a ANSW✅✅valve
an atmospheric vacuum breaker is not required to have a ANSW✅✅annula field test
the air inlet valve of an atmospheric vacuum breaker is held closed by ANSW✅✅water pressure
ANSW✅✅14.7+gau
1974 ANSW✅✅clean water act
