Bk 29: Water Utilities - General Info

Question 1

Customer Lines can vary between __ to __ inches?

Answer 1

1/2 to 12”

Question 2

Gravity Systems:

A height of 100 ft. will create a pressure of ___ psi.

Answer 2

43 psi

.433 psi per ft. elevation x 100 = 43 psi

Question 3

_______ Lines carry water from a Primary Source (i.e. reservoirs, pumps) to Mains within a Distribution System?

Answer 3

Trunk

Question 4

Trunk Lines can vary from ___ in. to ____ ft. in size and are constructed of Iron or Concrete.

Answer 4

36 in. to 10 ft.

Question 5

_____ normally runs beneath a street and to a curb and can vary from 2 to 72 in. and are constructed of Iron Pipe.

Answer 5

Mains

Question 6

______ Lines run between a MAIN and a Water Meter.

Answer 6

Service

Question 7

Service Lines can vary from __ to __ in.

Answer 7

1/2 to 12 in.

Question 8

MAINs vary in size from __ to __ in.

Answer 8

2 to 72 in.

Question 9

______ lines run between a Water Meter and a Structure.

Answer 9

Customer

Question 10

Customer Lines can vary from __ to __ in.

Answer 10

1/2 to 12 in.

Question 11

A ________ valve is a non-rising stem valve that has a SQUARE valve nut attachment at at the tope of the valve stem.

Answer 11

Gate

Question 12

These valves indicate an “open” or “closed position and are characterized by outside Stem and Yoke (OS&Y) valves and Post Indicator Valves (PIV).

Answer 12

Indicating Type Valves

Question 13

WATER METERs are normally directly adjacent to shut-off valves and vary in size from __ to ___ in.

Answer 13

1/2 to 10 in.

Question 14

COMPOUND METERs are __ in. or larger are normally Found directly adjacent to shut off valves.

Answer 14

4 in.

Question 15

What type of meter is used to calculate water usage for domestic water services that can use low and high water flows? These meters act as a standard water meter during low flow. During high flows a check valve opens and the high flow is metered separately.

Answer 15

Compound Meter

Question 16

Detector Check Valves can vary in size from __ to __ in.

Answer 16

2 to 10 in.

Question 17

What type of valves are used in domestic services to reduce High Water Pressures to an acceptable level inside a structure (dwellings commonly use 40 to 80 psi).

Answer 17

Pressure Reducing Valve

Question 18

Fire hydrant gate valves may require ___ to ___ full turns tocomplete a shutdown.

Answer 18

18 to 26

Question 19

Approximately ___% of all fire hydrant gate valves close in aclockwise direction.

Answer 19

98%

Question 20

A ___ inch diameter cap (usually painted ____) covers access to the gate valve. Some gate valve locations are indicated by ______
etched on the adjacent curb.

Answer 20

6 in.

Blue

Arrows