BACKFLOW / CROSS CONNECTION
(TEST PRACTICE) QUESTIONS
14.71 Pounds per square inch - Correct Answers -what is the means value of
atmospheric pressure at sea level
Backsiphonage - Correct Answers -A backflow condition in which the pressure in the
distribution system is less than atmospheric pressure (subatmospheric)
Cross Connection - Correct Answers -A byass arrangement or jumper connection
around a backflow prevention device is considered a....
Both Backsiphonage and BackPressure - Correct Answers -A direct cross-connection is
a cross connection that is subject to ...
Pressure Vacuum Breaker - Correct Answers -A device designed to prevent
backsiphonge, consisting of one independently operating spring-loaded check valve and
an independently operating spring loaded air-inlet valve.
Double Check Valve Assembly - Correct Answers -Assembly composed of two
independently acting, approved check valves , including tightly closing resilient seated
shut off valves attached at each end of the assembly and fitted with properly located
resilient seated test cocks
False - Correct Answers -Backflow from a submerged inlet to a plating solution tank is
prevented only through installation of a double check valve
air gap - Correct Answers -The highest possible backflow protection is provided by....
Dynamic Pressure - Correct Answers -the pressure associated with the movement of a
fluid
Twice the diameter of the pipe and no less than 1 inch - Correct Answers -An approved
air gap shall be at what vertical distance above the overflow rim and no less than what
distance?
Absolute Pressure - Correct Answers -Pressure measured on a scale where a perfect
vacuum is zero. th sume of gauge pressure and atmospheric pressure.
, spill resistant vacuum breaker assembly - Correct Answers -equipped with a properly
located resilient test cock, a properly located bleed/ vent port and a tightly closing
resilient seated shot off valves attached to each end of the assembly
Water Purveyor - Correct Answers -Who has the primary responsibility in cross
connection control to protect the public water supply ( containment)
True - Correct Answers -A reduced pressure principal is a device that can be used to
protect against pollution, contamination, back pressure and back siphonage.
Isolation - Correct Answers -A method of back flow prevention at the point of use of the
customer's water supply
Barometric Loop - Correct Answers -A vertical loop of pipe, rising to a height sufficient
to prevent back-siphonage from occurring in the potable water supply pipe.
(Approximately 35 feet, depending on the weight of the atmosphere.)
15 working days - Correct Answers -In Orange Cunty, a certified tester is required to
submit their test report from with in how many days of testing a backflow device?
Health and Safety Code - Correct Answers -Who gives the authority to LOCAL HEALTH
agencies to administer the cross connection program and tester certification program
The flood level rim of the plumbing fixture - Correct Answers -An Air Gap is measured
from the exit of the piping to what?
33.9 ft - Correct Answers -A perfect vacuum at sea level can pull a water column
approximately how many feet?
Isolation - Correct Answers -Back flow prevention at the point of use is define as?
Reduced Pressure Principle Backflow Assembly - Correct Answers -For Containment
protection in a high hazard situation, the minimum backflow prevention device required
is
Differential Pressure - Correct Answers -The difference in pressure between two
locations in a piping system
Differenteial pressure gauge - Correct Answers -Type of equipment used to test
backflow assemblies such as RP, DC, PVB, SVB
False - Correct Answers -A vented double check backflow prevention device is a
testable device?
Venturi Effect - Correct Answers -A decrease of pressure due to an increase of an
incompressible fluid's velocity through a constricted area of piping.
(TEST PRACTICE) QUESTIONS
14.71 Pounds per square inch - Correct Answers -what is the means value of
atmospheric pressure at sea level
Backsiphonage - Correct Answers -A backflow condition in which the pressure in the
distribution system is less than atmospheric pressure (subatmospheric)
Cross Connection - Correct Answers -A byass arrangement or jumper connection
around a backflow prevention device is considered a....
Both Backsiphonage and BackPressure - Correct Answers -A direct cross-connection is
a cross connection that is subject to ...
Pressure Vacuum Breaker - Correct Answers -A device designed to prevent
backsiphonge, consisting of one independently operating spring-loaded check valve and
an independently operating spring loaded air-inlet valve.
Double Check Valve Assembly - Correct Answers -Assembly composed of two
independently acting, approved check valves , including tightly closing resilient seated
shut off valves attached at each end of the assembly and fitted with properly located
resilient seated test cocks
False - Correct Answers -Backflow from a submerged inlet to a plating solution tank is
prevented only through installation of a double check valve
air gap - Correct Answers -The highest possible backflow protection is provided by....
Dynamic Pressure - Correct Answers -the pressure associated with the movement of a
fluid
Twice the diameter of the pipe and no less than 1 inch - Correct Answers -An approved
air gap shall be at what vertical distance above the overflow rim and no less than what
distance?
Absolute Pressure - Correct Answers -Pressure measured on a scale where a perfect
vacuum is zero. th sume of gauge pressure and atmospheric pressure.
, spill resistant vacuum breaker assembly - Correct Answers -equipped with a properly
located resilient test cock, a properly located bleed/ vent port and a tightly closing
resilient seated shot off valves attached to each end of the assembly
Water Purveyor - Correct Answers -Who has the primary responsibility in cross
connection control to protect the public water supply ( containment)
True - Correct Answers -A reduced pressure principal is a device that can be used to
protect against pollution, contamination, back pressure and back siphonage.
Isolation - Correct Answers -A method of back flow prevention at the point of use of the
customer's water supply
Barometric Loop - Correct Answers -A vertical loop of pipe, rising to a height sufficient
to prevent back-siphonage from occurring in the potable water supply pipe.
(Approximately 35 feet, depending on the weight of the atmosphere.)
15 working days - Correct Answers -In Orange Cunty, a certified tester is required to
submit their test report from with in how many days of testing a backflow device?
Health and Safety Code - Correct Answers -Who gives the authority to LOCAL HEALTH
agencies to administer the cross connection program and tester certification program
The flood level rim of the plumbing fixture - Correct Answers -An Air Gap is measured
from the exit of the piping to what?
33.9 ft - Correct Answers -A perfect vacuum at sea level can pull a water column
approximately how many feet?
Isolation - Correct Answers -Back flow prevention at the point of use is define as?
Reduced Pressure Principle Backflow Assembly - Correct Answers -For Containment
protection in a high hazard situation, the minimum backflow prevention device required
is
Differential Pressure - Correct Answers -The difference in pressure between two
locations in a piping system
Differenteial pressure gauge - Correct Answers -Type of equipment used to test
backflow assemblies such as RP, DC, PVB, SVB
False - Correct Answers -A vented double check backflow prevention device is a
testable device?
Venturi Effect - Correct Answers -A decrease of pressure due to an increase of an
incompressible fluid's velocity through a constricted area of piping.
