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68 Cards in this Set
- Front
- Back
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What is a confined aquifer? |
An artesian aquifer that had a confining bed above |
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A hole is drilled and water is flowing to surface, what have you found? |
Flowing artesian |
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Unconfined aquifer? |
No confining bed above Water in aquifer and static water are same height |
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An impeller brings fluid in thru |
Eye |
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Space between well borehole and outside well casing is known as? |
The annulus |
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Theoretical lift? |
34’ |
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Pitless adapters are |
Corrosion resistant |
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Practical lift? |
25’ |
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Why is practical lift lower than theoretical? |
Friction losses from pipe and fittings are accounted for |
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For every 1000 ft above sea level you lose |
1 ft of lift |
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Slots and screens at bottom of casing are used |
To keep gravel and sand |
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What happens when pump draws more water than aquifer supplies? |
Cone of depression increases significantly. Which in turn draws unwanted **** into your water supply |
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Construction of drop pipes? |
PE - 160 series (minimum) 200 is fusable Scd 40 min. Galvanized |
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When would you use galvanized pipe for drop pipe? |
When depths are 300ft plus |
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What purpose does a foot valve serve? |
Keeps pumps primed by keeping water in drop pipe |
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Aquifer means? |
Underground sand/gravel that contains water |
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What pumps would use a foot valve |
Any jet or suction pump |
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Where would pitless adapters be installed |
Below frost line attached to a snare pipe |
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Capacity of a pump rated in? |
Lpm/Gpm |
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Shallow well? |
No deeper than 25 ft from pump |
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What would be used to keep contaminants from entering a well? |
A sanitary well seal 🦭 |
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What are the 2 lines called from a jet pump? |
Suction Drive line |
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Deep well? |
Deeper than 24 ft |
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Well sizes? |
Resi- 4” Comm- 6” |
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What pump uses a Venturi and nozzle to increase efficiency? |
Jet pump |
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Where would you find a pump with and open bottom? |
Sewage lift station |
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What are cisterns constructed of? |
Steel Concrete Pe Fiberglass |
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How does a float type volume control work? |
Works off water level within pressure tank. |
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What are the two different kinds of floats for an air volume controller? |
Deep (has throw) Shallow (straight) |
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Flow control fitting is a |
Orifice |
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Pressure switch must have a differential cut/ in cut/ out of? |
20 psi |
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What are the cut in/out settings for pressure switch? |
20-40/30-50/40-60 |
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Definition pf pressure drop? |
Loss of pressure from friction in pipe and fittings and equipment |
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What should a pressure tank be set at? |
3-5 psi below cut in |
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When pressure tank is at its cut out pressure, what percentage of air does it contain? |
33% |
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What are pressure tanks constructed of? |
Steel (water in bladder) Fibre glass (air in bladder) |
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Types of pumps |
Positive displacement Variable displacement |
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What needs to be placed on outlet of submersible pump? |
A lift check valve |
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What do all positive displacement pumps require? |
Prv set at 10psi above cut out |
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Variable displacement pumps typically |
Have higher pump curve Less gpm |
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What device centres a submersible pump in well when using flex pipe? |
Torque arrestor |
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Most common pump is the |
Centrifugal pump |
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Reciprocating pump is a |
Positive displacement pump |
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Which reciprocating pump can only be used as suction pump? |
Horizontal |
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Which reciprocating pump would be used for a deep well? |
Vertical moving piston |
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Reciprocating pumps have prv set at? |
15-20psi above cut out |
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Max height of water level in well is called |
Static level |
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What device lets atmosphere air into pressure tank? |
Air volume control |
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Which pump is not considered positive displacement |
Diaphragm pump |
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What pump is hand operated? |
Piston pump |
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What pump is used for moving chemical materials |
Diaphragm pump |
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It is recommended that a pump runs for a min of |
2 mins 25 times per hour |
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Which pump uses gears/wheels to move water? |
Rotary pump |
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Is roatary pump a pos. Displacement pump? |
Yes |
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Which pump operates like a human heart? |
Peristaltic pump |
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Jet pump is a |
Centrifugal pump |
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Jet pump with just one pipe is capable of ? |
25 ft of head |
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2 pipe jet pump can handle |
Up to 180’ |
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When a jet pump is converted to 2 pipe, how much more efficient is it? |
50% |
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What pump is used to move a lot of water at high pressures |
Deep well turbine pump |
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Deep well turbine have thick impellers that are reffered to as |
Bowls |
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What pump will fit in a 4” well? |
Submersible pump |
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Submersible pumps are |
POS. Displacement pumps Centrfugal multi stage |
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How many psi per stage? |
9 |
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How many psi per foot of water column? |
.433psi/ft |
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What about per inch? |
.0361psi/inch |
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How much water is needed per person? |
60 us gal 230 L per day |
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A well is 300 ft deep, what material is used for drop pipe? |
Galvanized steel |
