Backflow Questions and Answers
Already Passed
Actual Cross Connection ✔✔Any arrangement of pipes, fittings, or devices that connects a
potable water supply DIRECTLY to a non-potable source at all times.
Air Gap ✔✔In plumbing, the unobstructed vertical distance though the free atmosphere between
the lowest opening from any pipe or outlet supplying water to a tank, plumbing fixtures. or other
container, and the over flow rom of that container.
Atmospheric Vacuum Breaker ✔✔A mechanical device consisting of a float check valve and an
air-inlet port designed to prevent backsphonage.
Auxiliary Supply ✔✔Any water source or system other than the potable water supply, that may
be available in the building or premises.
Backflow ✔✔A hydraulic condition, caused by a difference in pressures in which non-potable
water or other fluids flow into a potable water system.
, Back Pressure ✔✔A backflow condition in which a pump, elevated tank, boiler, or other means
results in a downstream pressure greater than the supply pressure.
Backsiphonage ✔✔A backflow condition in which the pressure in the distribution system is less
than atmospheric pressure.
Bypass ✔✔In cross-connection control, any pipe arrangement that passes water around a
protective device causing it to be ineffective
Carrier ✔✔A human or animal that carries disease germs and can pass them to another person
without getting the disease himself.
Check Valve ✔✔A valve designed to open in the direction of normal flow and close with the
reversal of flow.
Cross Connection ✔✔Any arrangement of pipes, fittings, fixtures, or devices that connects a
non-potable system to a portable water system,
Already Passed
Actual Cross Connection ✔✔Any arrangement of pipes, fittings, or devices that connects a
potable water supply DIRECTLY to a non-potable source at all times.
Air Gap ✔✔In plumbing, the unobstructed vertical distance though the free atmosphere between
the lowest opening from any pipe or outlet supplying water to a tank, plumbing fixtures. or other
container, and the over flow rom of that container.
Atmospheric Vacuum Breaker ✔✔A mechanical device consisting of a float check valve and an
air-inlet port designed to prevent backsphonage.
Auxiliary Supply ✔✔Any water source or system other than the potable water supply, that may
be available in the building or premises.
Backflow ✔✔A hydraulic condition, caused by a difference in pressures in which non-potable
water or other fluids flow into a potable water system.
, Back Pressure ✔✔A backflow condition in which a pump, elevated tank, boiler, or other means
results in a downstream pressure greater than the supply pressure.
Backsiphonage ✔✔A backflow condition in which the pressure in the distribution system is less
than atmospheric pressure.
Bypass ✔✔In cross-connection control, any pipe arrangement that passes water around a
protective device causing it to be ineffective
Carrier ✔✔A human or animal that carries disease germs and can pass them to another person
without getting the disease himself.
Check Valve ✔✔A valve designed to open in the direction of normal flow and close with the
reversal of flow.
Cross Connection ✔✔Any arrangement of pipes, fittings, fixtures, or devices that connects a
non-potable system to a portable water system,
