Definitions

Question 1

American National Standards Institute

Answer 1

ANSI

Question 2

American Society of Sanitary Engineers

Answer 2

ASSE

Question 3

Atmospheric Vacuum Breaker

Answer 3

AVB

Question 4

Critical Level

Answer 4

CL

Question 5

Double Check Valve Assembly

Answer 5

DC

Question 6

Double Check Detector Assembly

Answer 6

DCDA

Question 7

Pounds per Square Inch Absolute

Answer 7

PSIA

Question 8

Pounds per Square Inch Differential

Answer 8

PSID

Question 9

Pounds per Square Inch Gauge

Answer 9

PSIG

Question 10

Pressure Vacuum Breaker

Answer 10

PVB

Question 11

Reduced Pressure Principle Assembly

Answer 11

RP

Question 12

Reduced Pressure Detector Assembly

Answer 12

RPDA

Question 13

Safe Drinking Water Act

Answer 13

SDWA

Question 14

Spill-resistant Vacuum Breaker

Answer 14

SVB

Question 15

Test Cock

Answer 15

TC

Question 16

The total pressure: gauge pressure plus atmospheric pressure

Answer 16

Absolute Pressure

Question 17

The unobstructed vertical distance through the free atmosphere between the lowest drainage opening and the flood level rim of the receptor

Answer 17

Air Gap, Drainage

Question 18

The unobstructed vertical distance through the free atmosphere between the lowest opening in the potable water supply and the flood level rim of any tank, vat or fixture

Answer 18

Air Gap, Water Supply

Question 19

An opening in the body of a device or assembly, which will allow air into the liquid passageway to break a siphon

Answer 19

Air Inlet

Question 20

Acceptable to the Authority Having Jurisdiction

Answer 20

Approved

Question 21

Assembly that has been tested for conformity with recognized standards acceptable to the Authority Having Jurisdiction

Answer 21

Approved Assembly

Question 22

An assembly of components, such as isolation valves,check valves,test cocks, and more that together constitute a backflow preventer that can be in-line testable.

Answer 22

Assembly

Question 23

This is the pressure exerted by the earth’s atmosphere at sea level,which is 14.7PSI

Answer 23

Atmospheric Pressure

Question 24

The undesirable reversal of flow in a potable system that is connected to a non potable system

Answer 24

Backflow

Question 25

Backflow due to an increased pressure above supply pressure

Answer 25

Backpressure

Question 26

Backflow due a negative (less than atmospheric) pressure in the supply

Answer 26

Backsiphonage

Question 27

A vertical piping arrangement designed to prevent backsiphonage backflow. (35 feet above highest use )

Answer 27

Barometric Loop

Question 28

Isolating The water consumer from the water main. Backflow preventer located at the meter.

Answer 28

Containment

Question 29

An impairment of the quality of the potable water that creates an actual hazard to the public health.( High hazard)

Answer 29

Contaminant

Question 30

Water pressure available for more than 12 hours in a 24 hour period.

Answer 30

Continuous Pressure

Question 31

The minimum elevation above the flood level rim, ground or highest downstream use

Answer 31

Critical Level

Question 32

Any connection or arrangement, physical or otherwise, between the potable supply and a non potable source .

Answer 32

Cross-connection

Question 33

Derived from the evaluation of conditions within a water system, which can be classified as either a health hazard or non health hazard

Answer 33

Degree of hazard

Question 34

A backflow preventer generally consisting of a single valve body,not capable of field testing with a gauge

Answer 34

Device

Question 35

The relative difference in pressure between two points in the system.( upstream & downstream of a check)

Answer 35

Differential pressure

Question 36

Backflow preventer consisting of two independently acting internally loaded check valves,,

Answer 36

Double check valve assembly

Question 37

A device for backflow prevention consisting of two independently acting internally loaded check valves, no test cocks & no isolation valves.

Answer 37

Dual check

Question 38

The minimum cross-sectional area at the point of water supply discharge to a fixture or tank. ( This applies to an air gap)

Answer 38

Effective opening

Question 39

A continuous, enclosed interconnection to allow the flow of fluid from one system to the other.

Answer 39

Direct cross-connection

Question 40

A potential cross-connection were the interconnection between the two systems is not permanent .

Answer 40

Indirect cross-connection

Question 41

Backflow prevention protection provided at each fixture or system connection.

Answer 41

Isolation

Question 42

A gauge pressure less than the existing atmospheric pressure when the latter is taken as a zero reference

Answer 42

Negative Pressure

Question 43

A disease-producing organism or agent,such as virus, bacterium or other microorganism.

Answer 43

Pathogen

Question 44

An impairment of the quality of the potable water to a degree that does not create a hazard to the public health but which does adversely affect the aesthetic quality of the water. ( looks bad,smells bad or tastes bad)

Answer 44

Pollution

Question 45

Backflow preventer consisting of a loaded air inlet valve, an internally loaded check valve, two properly located test cocks and two isolation valves.

Answer 45

Pressure vacuum breaker assembly

Question 46

Backflow preventer consisting of two independently acting internally loaded check valves,a differential pressure-relief valve, four properly located test cocks,and two isolation valves.

Answer 46

Reduced pressure principle assembly

Question 47

The tendency of matter to change in volume in response to a change in temperature.

Answer 47

Thermal expansion

Question 48

A poisonous substance that is produced by living cells or organism and is capable of causing disease when introduced into the body tissues.

Answer 48

Toxic

Question 49

A hydraulic principle that states as a flow path is restricted , an incompressible fluid will exhibit a greater velocity and a reduced system pressure through the restriction.

Answer 49

Venturi

Question 50

The pressure existing without any flow

Answer 50

Static pressure