Pumps For Private Water Supply Systems

Front 1

How does the diameter of a well affect pumping capacity?

Back 1

By limiting the size of a pump you can install.

Front 2

How is a pump able to lift water from a well?

Back 2

By creating a partial vacuum, in the pumping chamber.

Front 3

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

Back 3

Close to 34 ft theoretically

Front 4

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

Back 4

Jet pumps are better at developing negative, pressure than a centrifugal pump.

Front 5

What is the difference between a shallow, well and a deep well?

Back 5

The depth of the pumping level.

Shallow Wells are under 25ft, deepwells are over 25 ft.

Front 6

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

Back 6

Higher elevations, do not have as much atmospheric pressure to affect the water.

Front 7

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

Back 7

By reducing the amount of work, done by the atmospheric pressure.

Front 8

What conditions may cause cavitation for a centrifugal pump?

Back 8

Pump is working at maximum lift capacity.

Front 9

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

Back 9

For better air elimination when priming.

Front 10

How may drawdown in a well, affect an aquifer?

Back 10

Drawdown can allow the aquifer to start releasing sand

Front 11

Why should pump capacity be matched to The Well capacity?

Back 11

To prevent aquifer problems from developing.

Front 12

When is a whale considered to be a deep well?

Back 12

When the wells pumping level is deeper than 24 ft.

Front 13

Why are some jet pumps called convertible jet pumps?

Back 13

The jet assembly can be removed from the pump casing, and placed in a well deep as needed.

Front 14

Which of these two Piston Pumps can offset from the top of the.

well deep well or shallow well?

Back 14

Shallow well can be offset, due to the relatively low distance the pump has to lift.

Front 15

Which pump ,May produce enough pressure to damage a pressure system?

Back 15

A reciprocating and submersible pumps.

Front 16

What are helical screw pumps usually used for?

Back 16

Pumping slurries and sledges.

Front 17

When a shut off valve is placed on a tank tee, for a residential installation which side of the tank, should the tank tee, be placed on. Inlet or the outlet.

Back 17

Outlet of the tank tee.

Front 18

What is the pressure output of a submersible pump impeller stage, when multi stages are involved?

Back 18

9 pounds per square inch per stage.

Front 19

Why does a submersible pump,require a check valve at the outlet?

Back 19

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

Front 20

What type of impellers are used on centrifugal pumps?

Back 20

Closed, semi closed, or open impellers.

Front 21

What device is used on the outlet, I've two pipe jet pumps to allow the pump to produce the most water possible?

Back 21

A flow control fitting or a valve

Front 22

how does a centrifugal pump impeller works?

Back 22

the impeller brings fluid into the eye, by creating a negative pressure or low pressure , and then forces it through the gradually widening passages called veins, as the water leaves the rim of the impeller at high speed, the water is slowed and its velocity is changed into usable pressure.

Front 23

How high is the theoretical pump lift?

Back 23

34 ft which would equal 14.7 pounds per square inch atmospheric pressure

Front 24

How is practical lift of a pump affected by elevation?

Back 24

The Practical lift of a suction pump, must be reduced one foot for each thousand feet of elevation.

Front 25

What is a foot valve,and what are its parts?

Back 25

A foot valve is placed the bottom of a suction pipe, it would ensure that the suction pipe remains full of water, so the pump will not lose Prime.

The parts are Inlet screen spring-loaded Lift check .

Front 26

If dissolved gases are in your water system, how do you remove them from your system, and stop them from getting in your pump?

Back 26

A pressure tank that does not have an air water separation.

A tank Air volume control will be at the top portion of the tank, releasing any gases.

These gases must be vented outside to a safe area ,in case of explosion or harmful gas

Front 27

What is the pressure switch, and where can it be located?

Back 27

A pressure switch set the pressure for the water distribution.

The switch can be located on the tank tee, or on the pump itself allowing for easy adjustment pump Cycles

Front 28

How do you prevent cycling, or thermal overload,

To the pump and switch contacts?

Back 28

The minimum run time of 2 minutes and a Max Cycles of 25 Cycles. Per hour

Front 29

Reciprocating pumps name the types.

Back 29

One is the manually operated, reciprocating campsite pump vertical pump.

Working head pumps used deep well application.

Horizontal reciprocating pumps, use a piston horizontally ,can be used on shallow Wells and set off to the side. Working head pumps used deep well application.This piston action is vertical and is placed directly over the deep well.These pumps can't be single acting, moving water once for every two pumps,or double acting, moving water with every pump

This piston action is vertical and is placed directly over the deep well.

These pumps can't be single acting, moving water once for every two pumps,or double acting, moving water with every pump

Front 30

Reciprocating pumps are they positive displacement,

And if so do you need to protect piping from overpressure.

Back 30

They are positive displacement pumps, regardless of the discharge pressure and height, they will create pressure , piping must be protected by a pressure relief valve usually set to 15 to 20 psi

Commonly used in low production Wells.

Front 31

What is a diaphragm does? name some of its parts?

Back 31

Diaphragm pumps are considered to be not positive pressure pumps, these pumps are often used in transferring fluids, where power is not available.

It can be used in sump pump applications, and they can be used to pump corrosive materials, due to their working parts do not come in contact, with those corrosive materials.

Front 32

Bladder pumps explain the pump a little bit.

Back 32

Badder pumps are used for corrosive or sensitive fluids must be pumped. The bladder pump is basically a balloon ,with two openings and a swing check valve in one of the openings.

These pumps are often used for transferring fluids, they do not developing much pressure.

Front 33

Is a centrifugal pump a?

1)positive displacement pump.

2) A suction pump.

3)a variable displacement pump.

Back 33

3) variable displacement pump.

Front 34

Rotary or helical pumps name ,some different ones.

What type of of pump.

And Describe some characteristics.

Back 34

Internal gear pump.

External gear pump.

Single lobe and three lobe.

Two screw and three screw.

All are positive displacement pumps.

steady flow.

The rotation of the shaft ,is continuous and produces a steady flow.They are great for moving slurry or smudges,and are resist to wear from harsh fluidly.

They are great for moving slurry or smudges,and are resist to wear from harsh fluidly.

Front 35

Regenerative turbine pumps, what is their main use, and a brief description of how it works.

Back 35

The main use is for Municipal, Water applications or boosted water pressure systems, in high buildings where a pump was good flow and pressure characteristics is needed.

The impeller fits in a tight-fitting case ,with cups or fins every time it spins each cup or Finn, works on the water adding to the pressure ,until it comes to the outlet with much greater pressure then any centrifugal pump could provide.

Front 36

What is a peristaltic pump?

Back 36

Peristaltic pump, acts like your heart, buy a squeezing action on the fluid,

Another Style, produces Flow by slowly rotating a lobed cam, equipped with rollers against a compressible tube, squeezing the fluid through the tube.

Front 37

What are some of the uses for peristaltic pumps?

Back 37

They can be used in medical and environmental sectors.

Smaller peristaltic pumps can be used in chemical feed.

Front 38

Deep well turbine pumps name some of the characteristics.

Back 38

These are extremely large pumps and need heavy equipment to set them up and large stable basis for the torque that they produce.

The discharge pipe is call the water column because of its very large water columns they produce 16 to 24 inch.

Front 39

Deep well turbine pumps name some applications.

Back 39

deep well pumps can be set in a well many hundreds of feet down and can have several stages.

Municipal water treatment plants, Distribution Systems, and irrigation purposes.

Front 40

Jet pumps name two uses and, why is a flow control valve usually required

Back 40

With the jet assembly attached to the pump it's a, Single pipe , shallow well application .

With the jet assembly removed and placed in the well , it's a deep well applicationis and has a double pipe, 1 suction line, and one Driveline.

The flow control valve allows some water ,too be diverted to the Driveline and into the jet assembly Venturi.

This allows the jet to create better low pressure, and strong pumping performance.

Front 41

Jet pump name the parts.

Back 41

Starting at the bottom, foot valve, connected to the tailpipe, connected to the injector body with the Venturi, which has the drive line and the suction line.

the suction line is usually one size larger than the Driveline .

Followed by a pressure gauge a pressure switch and then out of the pump to the distribution line.

Front 42

When using a jet pump in a deep well, what is the maximum depth and tailpiece step?

Back 42

180feet to the jet, and another 35 ft for the tailpipe with foot file attached.

Front 43

What is submersible pump, and what is the residential size.

Back 43

Multistage centrifugal pump, made to run submerged in a well.

The typical residential size is 3 and 5/8 of an inch, in diameter fitting in a 4in well casing.

Front 44

Do submersible pumps need screens?

Back 44

Yes they do they are often made of plastic or stainless steel.

Plastic is preferred because, the screens can be encrusted in minerals,the plastic does not, become as encrusted as the stainless steel screen.

Front 45

What is impeller creep in a submersible pump?

Back 45

If there is air in the pump this will cause, the impellers and diffusers to rise in the stack, these will hit the top of the pump and where the impeller to the point of destroying the first impeller and possibly jamming the pump.

Front 46

Describe metering pumps?

Back 46

Metering pumps are used to measure accurately, small degrees chemicals added to a water system.

This pumps must be able to withstand, chemicals that need to be fed into a process and overcome, considerable pressure to get the solution into the piping system.

and be trouble-free.

Front 47

Name a few types of metering pumps.

Back 47

Piston Pumps, fully lined diaphragm pumps, peristaltic pumps,

Front 48

What is sub drainage?

Back 48

A drainage system that does not drain, by gravity to the building sewer.

Front 49

How does an effluent pump work in general.

Back 49

Pumping effluence from the effluent chamber, to a disposal field, the pump needs to pump relatively clean fluid from a harsh environment.

Front 50

Pressure relief valves for submersible pumps are usually set at?

Back 50

Usually set at 10 psi above the cut out pressure of a submersible pump.

Front 51

Explain theoretical lift?

Back 51

If you can create one PSI,of vacuum you can push, water up 2.31 feet.

If you can create 14.7 PSI, atmospheric pressure, you can create a theoretical lift 33.8 or 34 feet.

Front 52

At higher altitudes , what is the reduction, of feet of head of a pump?

Back 52

For every thousand feet of above sea level, you lose one foot of suction

Front 53

Name the common centrifugal pumps?

Back 53

Submersible pumps, jet pumps, circulating pumps, booster pumps, and sump pumps.

Front 54

Do multiple impellers increase the gallons per minute?

Back 54

No just the PSI or pressure.

Front 55

How many types of jet pumps are there?

Back 55

There are three types, shallow well only, Deep Well only, and convertible can do shallow well and deep well.

Front 56

Can I horizontal piston pump be used in a deep well application?

Back 56

No shallow well only.

Front 57

What is the other name for a vertical piston pump?

Back 57

The working head pump.

Front 58

Describe how a vertical piston pump or working head pump functions.

Back 58

The Piston can be placed down in the well below water level, now the only restriction of depth is the size of the motor push the water to ground level.

The one small drawback is that the pump needs to be protected from weather, and have a pump house built,around it if it is not in a building or a home already

Front 59

Is a piston pump a positive displacement pump?

Back 59

Yes.

Front 60

Are centrifugal pumps considered to be, positive displacement or variable displacement?

Back 60

Variable displacement.

Front 61

How many check valves in a single acting piston pump?

How many check valves in a dual acting piston pump?

Back 61

Two check valves for a single acting,

4 check valves for a dual acting.

Front 62

Does a pressure relief valve need to be installed on a positive displacement system?

Back 62

Yes potential for blowing up the system is there.

Front 63

Rotary pumps are they positive displacement, or variable displacement?

Back 63

Positive displacement.

Front 64

Since rotary pumps are positive displacement, peristaltic, gear type ,and multi screw type rotary pumps are some of the kinds what is necessary in the system to stop over pressuring.

Back 64

A safety relief valve set to 10 to 20 pounds above out pressure.

Front 65

Done

Back 65

Done