Backflow Test USC
complete with 100%
correct answers
Absolute Pressure
Pressure measured on a scale where a perfect vacuum is zero .
Absolute pressure is the sum of gage pressure and atmospheric
pressure .
Accessible
Capable of being reached for testing and maintenance it first may
require the removal of an access panel door or similar obstruction
Administrative Authority
Individual Fishel or agency established by a state county city
created by law to administer and enforce provisions of the cross-
connection control program
Air Gap
A physical separation between the free-flowing discharge end of a
potable water supply pipeline and an open or non-pressure
receiving vessel. And approve Air gap shall be at least twice the
diameter of the supply pipe measured Vertically above The overflow
rim of the receiving vessel; In no case less than 1 inch.
Approved backflow prevention assembly
And assembly that has been investigated and Approved by the
administrative authority having jurisdiction. The approval of
backflow prevention assemblies by the administrative authority
, shall be on the basis of a favorable laboratory and field evaluation
report by an approved testing laboratory recommending such
approval.
Approved check valve
A check valve that is drip tight in the normal direction of flow when
the inlet pressure is at least 1.0 psi (pound per square inch) And the
outlet pressure is zero. The check valve shell permit no leakage In a
direction reversed to the normal flow. The closure element (eg:
clapper or poppet) shall be internally loaded To promote rapid and
positive closure. And approve check valve is only one component of
an approved backflow prevention assembly. (Ie: Pressure vacuum
breaker {PVB and SVB}, Double check valve assembly {DC} or
reduce pressure principal assembly {RP}.
Approved testing laboratory
The foundation of Cross-Connection Control and hydraulic research
of the University of Southern California or other laboratory having
equivalent capabilities for both the laboratory and field evaluation
of backflow prevention assemblies
Approved water supply
Any public potable water supply, which has been investigated and
Approved by the health agency having jurisdiction. The system must
be operating under a valid health permit. In determining what
constitutes an approved water supply, the health agency has final
judgment as to its safety and portability.
Aspirator
A device used for creating suction, specifically by flowing water
through a Venturi or restricted area of flow. At this restricted area
of flow the pressure drops to sub-atmospheric, thus suction is
created. Usually a tube is attached at this location for aspiration or
suction purposes.
Aspirator effect
The effect created by an aspirator, restricted area of flow or
undersized piping.
Atmospheric pressure
complete with 100%
correct answers
Absolute Pressure
Pressure measured on a scale where a perfect vacuum is zero .
Absolute pressure is the sum of gage pressure and atmospheric
pressure .
Accessible
Capable of being reached for testing and maintenance it first may
require the removal of an access panel door or similar obstruction
Administrative Authority
Individual Fishel or agency established by a state county city
created by law to administer and enforce provisions of the cross-
connection control program
Air Gap
A physical separation between the free-flowing discharge end of a
potable water supply pipeline and an open or non-pressure
receiving vessel. And approve Air gap shall be at least twice the
diameter of the supply pipe measured Vertically above The overflow
rim of the receiving vessel; In no case less than 1 inch.
Approved backflow prevention assembly
And assembly that has been investigated and Approved by the
administrative authority having jurisdiction. The approval of
backflow prevention assemblies by the administrative authority
, shall be on the basis of a favorable laboratory and field evaluation
report by an approved testing laboratory recommending such
approval.
Approved check valve
A check valve that is drip tight in the normal direction of flow when
the inlet pressure is at least 1.0 psi (pound per square inch) And the
outlet pressure is zero. The check valve shell permit no leakage In a
direction reversed to the normal flow. The closure element (eg:
clapper or poppet) shall be internally loaded To promote rapid and
positive closure. And approve check valve is only one component of
an approved backflow prevention assembly. (Ie: Pressure vacuum
breaker {PVB and SVB}, Double check valve assembly {DC} or
reduce pressure principal assembly {RP}.
Approved testing laboratory
The foundation of Cross-Connection Control and hydraulic research
of the University of Southern California or other laboratory having
equivalent capabilities for both the laboratory and field evaluation
of backflow prevention assemblies
Approved water supply
Any public potable water supply, which has been investigated and
Approved by the health agency having jurisdiction. The system must
be operating under a valid health permit. In determining what
constitutes an approved water supply, the health agency has final
judgment as to its safety and portability.
Aspirator
A device used for creating suction, specifically by flowing water
through a Venturi or restricted area of flow. At this restricted area
of flow the pressure drops to sub-atmospheric, thus suction is
created. Usually a tube is attached at this location for aspiration or
suction purposes.
Aspirator effect
The effect created by an aspirator, restricted area of flow or
undersized piping.
Atmospheric pressure
