Backflow Prevention Assembly Tester
Practice Exam Questions and Answers
(2026) | Newest Practice Questions |
100% Correct Answers | A+
• What is an Atmospheric Vacuum Breaker? -✓✓A mechanical device consisting of a
float check valve and an air-inlet port designed to prevent backsiphonage
• What is an auxiliary supply? -✓✓Any water source or system, other than the potable
water supply, that may be available in the building or premises
• What is backflow? -✓✓A hydraulic condition, caused by difference in pressures, in
which non-potable water or other fluids flow into a potable water system
• What is backpressure? -✓✓A backflow condition in which a pump, elevated tank,
boiler, 0r other means results in a downstream pressure greater than the supply
pressure
• What is backsiphange? -✓✓A backflow condition in which the pressure in the
distribution system is less than atmospheric pressure (sub-atmospheric)
• What is a bypass? -✓✓In cross-connection control, any pipe arrangement that passes
water around a protective device, casing it to be ineffective
• What is the purpose of a check valve? -✓✓To allow flow in only one direction
• What is a cross connection? -✓✓Any arrangement of pipes, fittings, fixtures, or
devices that connects a non-potable system to a potable water system
• What does DCVA stand for? -✓✓Double Check Valve Assembly
• What is a DCVA? -✓✓A testable mechanical device consisting of two independently
operating, spring-loaded check valves
• What is an overflow level? -✓✓The maximum height that water or liquid will rise in a
receptacle before it flows over the rim
• What is a potable water source? -✓✓Water that is biologically, chemically, and
radiologically safe to drink
, • What is a potential cross connection? -✓✓Any arrangement of pipes, fittings, or
devices that indirectly connects a potable water supply to a non-potable water source
• What does PVB stand for? -✓✓Pressure Vacuum Breaker
• What is a PVB? -✓✓A device designed to prevent backsiphonage, consisting of once
independently operating spring-loaded check valve and an independently operating
spring-loaded air-inlet valve
• What does RPBP stand for? -✓✓Reduced Pressure Backflow Preventer
• What does RPZBP stand for? -✓✓Reduced Pressure Zone Backflow Preventer
• What is an RP? -✓✓A mechanical device consisting of two independently operating,
spring-loaded check valves with a reduced pressure zone between the check valves
• Containment -✓✓Protection on the service line - protects the potable water supply
and not the customer
• Isolation -✓✓Protection on individual sources of hazard - provides internal protection
• What is a pollutant? -✓✓Non-health hazard - a substance that is aesthetically
objectionable but will not cause illness or death
• What is a contaminant? -✓✓Health hazard - a substance that will cause illness or
death
• Atmospheric pressure at sea level -✓✓14.7 psi
• psia -✓✓pounds per square inch, absolute - the total pressure, that is the sum of gage
pressure and atmospheric pressure
• psig -✓✓pounds per square inch, gage - the pressure above atmospheric pressure
• Required minimum system pressure in GA -✓✓20 psi
• Maximum theoretical value water can be pulled up a water column -✓✓33.9 ft
• _______ and _______ decrease pressure across a check valve -✓✓friction and
restriction
• Is a dual check an approved, testable backflow device? -✓✓No
• Where are dual checks commonly installed? -✓✓Residential
Practice Exam Questions and Answers
(2026) | Newest Practice Questions |
100% Correct Answers | A+
• What is an Atmospheric Vacuum Breaker? -✓✓A mechanical device consisting of a
float check valve and an air-inlet port designed to prevent backsiphonage
• What is an auxiliary supply? -✓✓Any water source or system, other than the potable
water supply, that may be available in the building or premises
• What is backflow? -✓✓A hydraulic condition, caused by difference in pressures, in
which non-potable water or other fluids flow into a potable water system
• What is backpressure? -✓✓A backflow condition in which a pump, elevated tank,
boiler, 0r other means results in a downstream pressure greater than the supply
pressure
• What is backsiphange? -✓✓A backflow condition in which the pressure in the
distribution system is less than atmospheric pressure (sub-atmospheric)
• What is a bypass? -✓✓In cross-connection control, any pipe arrangement that passes
water around a protective device, casing it to be ineffective
• What is the purpose of a check valve? -✓✓To allow flow in only one direction
• What is a cross connection? -✓✓Any arrangement of pipes, fittings, fixtures, or
devices that connects a non-potable system to a potable water system
• What does DCVA stand for? -✓✓Double Check Valve Assembly
• What is a DCVA? -✓✓A testable mechanical device consisting of two independently
operating, spring-loaded check valves
• What is an overflow level? -✓✓The maximum height that water or liquid will rise in a
receptacle before it flows over the rim
• What is a potable water source? -✓✓Water that is biologically, chemically, and
radiologically safe to drink
, • What is a potential cross connection? -✓✓Any arrangement of pipes, fittings, or
devices that indirectly connects a potable water supply to a non-potable water source
• What does PVB stand for? -✓✓Pressure Vacuum Breaker
• What is a PVB? -✓✓A device designed to prevent backsiphonage, consisting of once
independently operating spring-loaded check valve and an independently operating
spring-loaded air-inlet valve
• What does RPBP stand for? -✓✓Reduced Pressure Backflow Preventer
• What does RPZBP stand for? -✓✓Reduced Pressure Zone Backflow Preventer
• What is an RP? -✓✓A mechanical device consisting of two independently operating,
spring-loaded check valves with a reduced pressure zone between the check valves
• Containment -✓✓Protection on the service line - protects the potable water supply
and not the customer
• Isolation -✓✓Protection on individual sources of hazard - provides internal protection
• What is a pollutant? -✓✓Non-health hazard - a substance that is aesthetically
objectionable but will not cause illness or death
• What is a contaminant? -✓✓Health hazard - a substance that will cause illness or
death
• Atmospheric pressure at sea level -✓✓14.7 psi
• psia -✓✓pounds per square inch, absolute - the total pressure, that is the sum of gage
pressure and atmospheric pressure
• psig -✓✓pounds per square inch, gage - the pressure above atmospheric pressure
• Required minimum system pressure in GA -✓✓20 psi
• Maximum theoretical value water can be pulled up a water column -✓✓33.9 ft
• _______ and _______ decrease pressure across a check valve -✓✓friction and
restriction
• Is a dual check an approved, testable backflow device? -✓✓No
• Where are dual checks commonly installed? -✓✓Residential
