Valve and Hydrant Maintenance Practice Questions

Question 1
A swing check valve is a special valve because it does not have a ________.
A
operator
B
connection
C
movable element
D
body
Question 2
________ well lift stations must have ________ separate sump pump(s).
A
dry/two
B
dry/one
C
wet/one
D
wet/two
Question 3
Old hydrants usually have a coefficient of roughness of________%.
A
80
B
90
C
100
D
70
Question 4
According to AWWA’s hydrant color code, green indicates ________ flow and ________ gpm.
A
class A/1,000 – 1,500
B
high/> 1,500
C
class B/500 – 1,000
D
class C/< 500
Question 5
A ________ system may use a ________ grid to identify a section and then ________ the valves in each section.
A
large/color/paint
B
small/color/paint
C
small/number-color/letter
D
large/number-letter/number
Question 6
Rotating the cone valve ________ degrees from full open closes the valve.
A
30
B
45
C
90
D
60
Question 7
What is the flow in gpm from a fire hydrant through the 2-½ inch nozzle, the coefficient of roughness is 80% and the pressure is 81 psi?daum_equation_1403664059719
A
1,337 gpm
B
1,415 gpm
C
1,085 gpm
D
1,224 gpm
Question 7 Explanation: 
daum_equation_1403664140001
Question 8
Open or close valves slowly to prevent water ________.
A
leaks
B
hammer
C
surges
D
slammer
Question 9
After securing a map, ________ each valve.
A
operate
B
lubricate
C
paint
D
designate
Question 10
After maintenance ________ the valve fully, then ________ it ________-________ turn(s) to prevent metal-to-metal contact and corrosion bonding.
A
open, close, 1/2 - 3/4
B
open, close, 1/4 - 1/2
C
close, open, 8 - 10
D
close, open, 1/4 - 1/2
Question 11
The ________ valve has a body of flexible material that acts as the moveable element.
A
gate
B
pinch
C
butterfly
D
globe
Question 12
Adjusting ACV action speed prevents ________.
A
all listed
B
leakage
C
freezing
D
water hammer
Question 13
Atmospheric vacuum breakers must not be subjected to continuous ________.
A
temperature
B
service
C
pressure
D
hazards
Question 14
Calculate the water hammer force on a 5-¼ inch main valve with a residual pressure of 65 psi. daum_equation_1403663709941
A
1,200 pounds
B
5,625 pounds
C
1,400 pounds
D
5,400 pounds
Question 14 Explanation: 
daum_equation_1403663803446
Question 15
The TCEQ requires a ________ with external lever on the discharge line of a lift station pump.
A
butterfly valve
B
atmospheric vacuum breaker
C
double check valve
D
swing check valve
Question 16
Above ground reclaimed water facilities must be color-coded ________.
A
red
B
brown
C
gray
D
purple
Question 17
Level control valves are not true ACVs because they are not ________ or hydraulically activated.
A
remote controlled
B
self-servicing
C
motor driven
D
self-regulating
Question 18
The movable element of a plug valve is ________ in shape.
A
cylindrical
B
conical
C
spherical
D
rectangular
Question 19
Main valves are heavy and may settle if not supported on a ________ pad.
A
wooden
B
metal
C
concrete
D
plastic
Question 20
Pressure system isolation valves can be separated by no more than ________ feet along the main.
A
250
B
2,500
C
none listed
D
25
Question 21
The most common automatic level control valve is the ________ valve.
A
float
B
globe
C
gate
D
altitude
Question 22
An easy way to designate a valve is to ________ it on a distribution map.
A
number
B
all listed
C
locate
D
mark
Question 23
To protect hydrants from vehicles, set them at least ________ feet from the curb.
A
two
B
three
C
four
D
five
Question 24
Organizing a maintenance program starts with ________ of the distribution system or ________ of the plant or lift stations.
A
drawings/pictures
B
maps/prints
C
drawings/inspections
D
maps/permits
Question 25
The ________ Manual M-14 contains a guide on selecting a backflow prevention device.
A
TCEQ
B
OSHA
C
AWWA
D
EPA
Question 26
Instead of a disc or diaphragm, the movable element of a ________ valve is tapered to a fine point.
A
gate
B
butterfly
C
needle
D
plug
Question 27
BPAT licensing must be renewed every ________ years.
A
four
B
two
C
five
D
three
Question 28
Thrust blocks prevent joint separation or other damage caused by water ________.
A
surge
B
hammer
C
end thrust
D
velocity
Question 29
The altitude valve allows water into the tank, but closes at a set ________ to prevent tank overflow.
A
velocity
B
direction
C
pressure
D
volume
Question 30
Meet local standards when selecting and installing the backflow device and its ________.
A
appliances
B
apparatuses
C
appendages
D
appurtenances
There are 30 questions to complete.
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