C3b Pumps Flashcards
What are six components of a private water system
 A Electric, motorized, pumping unit
B pressure tank
C air volume control
D pressure switch
E relief valve
F foot valve
What is the correct ratio of water to air in a standard pressure tank?
1/3 air 2/3 water
A standard galvanized pressure tank that has lost its air change is said to be?
Waterlogged
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
Float type and diaphragm
The electrical device to turn the pump on and off is called
Pressure switch
An blank is a type of vertical lift check valve on the suction end of the piping in the world
Foot valve
Defined the term head
A pressure exceeds in terms of height of a water column in feet
Defined the term pressure
A measurement expressed in units of weight per area for example, pounds per square
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
Negative pressure
To convert feet of head to psi you multiply by
.433
What are four types of pressure tanks
Standard galvanized
floating disc
diaphragm
and bladder
There is no contact between the water in the tank when the blank type of pressure tank is used
Bladder type
List two things that will happen if the wire size to the pump is too small to meet the power requirements
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.
List two reasons why a well must be protected from water
A. Surface water could contaminate the well.
B. Surface water could puddle and freeze damaging piping and other components.
What are four different types of wells
A. Drilled.
B. Driven or jetted.
C. Dug
D. Bored
How much water is needed per person on a daily
60 US gallons or 230 L
Why does the amount of water needed by hogs very so greatly
Gender, size difference, and lactating status create varying demands
What is the rule of thumb for sizing, sprinkle lines based on national fire protection
Three-quarter inch to Supply one sprinkler 1 inch to supply two sprinkler heads
How is freeze protection provided for a cistern that cannot be buried deeply enough
By placing insulation suitable for the purpose over the tank
Why does a bird sister and require a vent line for the cistern?
The vent allows the cistern to operate under atmospheric pressure conditions
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
Uncoded concrete in porous will allow water to soak in lowering the sister and water level
Why is the vent terminal of a cistern in arrange to point back towards the ground
So precipitation cannot enter the vent
Why is drinking water with no additional treatment rarely collected directly from Lakes
The water may appear to be clean. But could be contaminated by animals using the water shed for the lake.
Why are water intakes placed at various levels in a Lake
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
When placing an impoundment box over a spring to provide water collection, how is this spring opening prepared
With as little disturbance as possible to the opening
How are Springs classified into three different
I have the water from the spring comes to the ground surface
How are Wells generally sorted as to their type
By the type of equipment that was used to make them
1 pound of pressure will lift a column of water how many feet
Two. 31 feet.
What factors, influence, water, ability to dissolve, soluble material?
Time of contact pH of the water temperature of the water
How does a well screen filter material out of the water coming from an unconsolidated aquifer
The screen relies on bridging of larger material near the screen to filter, finer material
What is well development?
The cleaning of an aquifer by a drill rig to ensure the well water is as clean as possible
How is a pump able to lift water from a
By creating a partial vacuum in the chamber
How does the diameter of the world affect pumping capacity?
By limiting the size of the pump you can install
What is the maximum theoretical lift a centrifugal pump used as a suction pump
Close to 34 feet
Why is a jet pump capable of greater suction lift than a centrifugal pump?
Jet pumps are better at developing negative pressure than centrifugal pumps
What is the difference between shallow well and deep well
Depth to the pumping level of the well
How does the altitude of a pump installation, affect, pumping selection, and installation methods
The higher elevations don’t have as much atmospheric pressure
How does friction loss affect the use of a suction pump?
By reducing the amount of work done by the atmospheric pressure
What condition may cause cavitation for a centrifugal pump?
Pump is working at maximum lift capacity
What type of pump is used most commonly and food and pharmaceutical industries
The rotary lobe pump
Why are centrifugal pump suction lines installed with positive grade from the well to the pump Inlet?
For better air, elimination when priming
How many drawdown in a well affect an aquifer
Drawdown can allow aquifer to start releasing sand
Why should a pump capacity be matched to well capacity?
To prevent aquifer problems from developing
When is a well considered to be a deep well?
When the weld pumping level is deeper than 24 feet
Why are some jet pumps called convertible jet pumps?
The jet assembly can be removed from the pump and placed in a well
Which of these two piston pumps can be offset from the top of a well
A deep well piston
B shallow, well piston
Shallow. Well piston.
Which pumps may produce enough pressure to damage a pressure system
Reciprocating and submergible pumps
What are helical screws pumps usually used for
Pumping s slurries and sledges
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
Outlet of the tank T
What is the pressure outlet of a submergible pump impeller stage?
Nine psi per stage
Why does a submergible pump require check valve at its offset?
To stop water from draining out of the drop pipe through the pump
What types of impellers are used on centrifugal pumps?
Semi closed
closed
Open
What device is used on the outlet of two pipe jet pumps to allow the pump to produce the most water possible
A flow control, fitting or valve
What is your goal when selecting the right pressure tank?
Maximizing the efficiency of the system
What kind of pressure tank do to help your
Extend the life of the motor and risk premature pump failure by extending time between cycles
For most pump manufactures pumps that have a one horse power motor shall run for at least how long
One minute
Pumps with a motor more than 1 hp shall run for at least how
Two minutes
When sizing a pressure tank, what are three important factors you need to know
A. Flow rate.
B. Cut in cut out psi
C. Target run time.
