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Plumbing > C3b Pumps > Flashcards

C3b Pumps Flashcards

1
Q

What are six components of a private water system

A

 A Electric, motorized, pumping unit
B pressure tank
C air volume control
D pressure switch
E relief valve
F foot valve

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2
Q

What is the correct ratio of water to air in a standard pressure tank?

A

1/3 air 2/3 water

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3
Q

A standard galvanized pressure tank that has lost its air change is said to be?

A

Waterlogged

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4
Q

An installation that requires air to be replaced in the pressure tank, requires an air volume control the two most common types of air volume control our

A

Float type and diaphragm

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5
Q

The electrical device to turn the pump on and off is called

A

Pressure switch

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6
Q

An blank is a type of vertical lift check valve on the suction end of the piping in the world

A

Foot valve

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7
Q

Defined the term head

A

A pressure exceeds in terms of height of a water column in feet

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8
Q

Defined the term pressure

A

A measurement expressed in units of weight per area for example, pounds per square

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9
Q

A pump works by creating a blank on the Inlet side of the pump which allows atmospheric pressure to force water into the suction line

A

Negative pressure

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10
Q

To convert feet of head to psi you multiply by

A

.433

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11
Q

What are four types of pressure tanks

A

Standard galvanized
floating disc
diaphragm
and bladder

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12
Q

There is no contact between the water in the tank when the blank type of pressure tank is used

A

Bladder type

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13
Q

List two things that will happen if the wire size to the pump is too small to meet the power requirements

A

A. the expected life of the electric motor will be reduced
B. Electrical energy will be lost in the form of heat in the feeder circuit.

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14
Q

List two reasons why a well must be protected from water

A

A. Surface water could contaminate the well.
B. Surface water could puddle and freeze damaging piping and other components.

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15
Q

What are four different types of wells

A

A. Drilled.
B. Driven or jetted.
C. Dug
D. Bored

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16
Q

How much water is needed per person on a daily

A

60 US gallons or 230 L

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17
Q

Why does the amount of water needed by hogs very so greatly

A

Gender, size difference, and lactating status create varying demands

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18
Q

What is the rule of thumb for sizing, sprinkle lines based on national fire protection

A

Three-quarter inch to Supply one sprinkler 1 inch to supply two sprinkler heads

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19
Q

How is freeze protection provided for a cistern that cannot be buried deeply enough

A

By placing insulation suitable for the purpose over the tank

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20
Q

Why does a bird sister and require a vent line for the cistern?

A

The vent allows the cistern to operate under atmospheric pressure conditions

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21
Q

After an uncoated concrete cistern is filled you observe the water level has lowered in the system and even though no one has used any water what caused this

A

Uncoded concrete in porous will allow water to soak in lowering the sister and water level

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22
Q

Why is the vent terminal of a cistern in arrange to point back towards the ground

A

So precipitation cannot enter the vent

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23
Q

Why is drinking water with no additional treatment rarely collected directly from Lakes

A

The water may appear to be clean. But could be contaminated by animals using the water shed for the lake.

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24
Q

Why are water intakes placed at various levels in a Lake

A

To allow an operator to collect the cleanest possible water from the lake during periods of the year when lake turnovers do the temperature differential

25
Q

When placing an impoundment box over a spring to provide water collection, how is this spring opening prepared

A

With as little disturbance as possible to the opening

26
Q

How are Springs classified into three different

A

I have the water from the spring comes to the ground surface

27
Q

How are Wells generally sorted as to their type

A

By the type of equipment that was used to make them

28
Q

1 pound of pressure will lift a column of water how many feet

A

Two. 31 feet.

29
Q

What factors, influence, water, ability to dissolve, soluble material?

A

Time of contact pH of the water temperature of the water

30
Q

How does a well screen filter material out of the water coming from an unconsolidated aquifer

A

The screen relies on bridging of larger material near the screen to filter, finer material

31
Q

What is well development?

A

The cleaning of an aquifer by a drill rig to ensure the well water is as clean as possible

32
Q

How is a pump able to lift water from a

A

By creating a partial vacuum in the chamber

33
Q

How does the diameter of the world affect pumping capacity?

A

By limiting the size of the pump you can install

34
Q

What is the maximum theoretical lift a centrifugal pump used as a suction pump

A

Close to 34 feet

35
Q

Why is a jet pump capable of greater suction lift than a centrifugal pump?

A

Jet pumps are better at developing negative pressure than centrifugal pumps

36
Q

What is the difference between shallow well and deep well

A

Depth to the pumping level of the well

37
Q

How does the altitude of a pump installation, affect, pumping selection, and installation methods

A

The higher elevations don’t have as much atmospheric pressure

38
Q

How does friction loss affect the use of a suction pump?

A

By reducing the amount of work done by the atmospheric pressure

39
Q

What condition may cause cavitation for a centrifugal pump?

A

Pump is working at maximum lift capacity

40
Q

What type of pump is used most commonly and food and pharmaceutical industries

A

The rotary lobe pump

41
Q

Why are centrifugal pump suction lines installed with positive grade from the well to the pump Inlet?

A

For better air, elimination when priming

42
Q

How many drawdown in a well affect an aquifer

A

Drawdown can allow aquifer to start releasing sand

43
Q

Why should a pump capacity be matched to well capacity?

A

To prevent aquifer problems from developing

44
Q

When is a well considered to be a deep well?

A

When the weld pumping level is deeper than 24 feet

45
Q

Why are some jet pumps called convertible jet pumps?

A

The jet assembly can be removed from the pump and placed in a well

46
Q

Which of these two piston pumps can be offset from the top of a well

A deep well piston
B shallow, well piston

A

Shallow. Well piston.

47
Q

Which pumps may produce enough pressure to damage a pressure system

A

Reciprocating and submergible pumps

48
Q

What are helical screws pumps usually used for

A

Pumping s slurries and sledges

49
Q

When I shut off, Val is placed on a tank tea for residential installation what side of the tank tea should be on?
A inlet of the tank T
B outlet of the tank T

A

Outlet of the tank T

50
Q

What is the pressure outlet of a submergible pump impeller stage?

A

Nine psi per stage

51
Q

Why does a submergible pump require check valve at its offset?

A

To stop water from draining out of the drop pipe through the pump

52
Q

What types of impellers are used on centrifugal pumps?

A

Semi closed
closed
Open

53
Q

What device is used on the outlet of two pipe jet pumps to allow the pump to produce the most water possible

A

A flow control, fitting or valve

54
Q

What is your goal when selecting the right pressure tank?

A

Maximizing the efficiency of the system

55
Q

What kind of pressure tank do to help your

A

Extend the life of the motor and risk premature pump failure by extending time between cycles

56
Q

For most pump manufactures pumps that have a one horse power motor shall run for at least how long

A

One minute

57
Q

Pumps with a motor more than 1 hp shall run for at least how

A

Two minutes

58
Q

When sizing a pressure tank, what are three important factors you need to know

A

A. Flow rate.
B. Cut in cut out psi
C. Target run time.

Plumbing (2 decks)

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