Private Water Supply Pressure System

Card Set Information

Author:
iLLian
ID:
289133
Filename:
Private Water Supply Pressure System
Updated:
2014-11-13 21:54:07
Tags:
Plumbing 4th Period
Folders:
Plumbing
Description:
Private Water Supply and Water Treatment
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  1. List the six components of a private water system
    • electric motorized pumping unit
    • pressure tank
    • air volume control
    • pressure switch
    • relief valve
    • foot valve
  2. What is the correct ratio of water to air in a standard pressure tank?
    A) 1/4 air, 3/4 water
    B) 2/3 air, 1/3 water
    C) 1/3 air, 2/3 water
    D) 3/4 air, 1/4 water
    C) 1/3 air, 2/3 water
    (this multiple choice question has been scrambled)
  3. A standard galvanized pressure tank that has lost its air charge is said to be ___________.
    A standard galvanized pressure tank that has lost its air charge is said to be _waterlogged_.
  4. A standard galvanized pressure tank that contains 33.3% air and 66.6% water will release 20% of its water before the pump must start again. This volume of water is called __________.
    A standard galvanized pressure tank that contains 33.3% air and 66.6% water will release 20% of its water before the pump must start again. This volume of water is called _useable water_.
  5. An installation that requires air to be replenished in the pressure tank requires an air volume control. The two most common types of air volume control are _________ and ________.
    An installation that requires air to be replenished in the pressure tank requires an air volume control. The two most common types of air volume control are _float type_ and _diaphragm type_.
  6. The electrical device that turns the pump on and off is called a/an _____________.
    The electrical device that turns the pump on and off is called a _pressure switch_.
  7. A/an _____________ is a type of vertical lift check valve on the suction end of the piping in the well
    A _foot valve_ is a type of vertical lift check valve on the suction end of the piping in the well
  8. Define the term HEAD
    A pressure expressed in terms of height of water column in feet
  9. Define the term PRESSURE
    A measurement expressed in unit of weight per area; for example, pounds per square inch.
  10. A pump works by creating a/an _______  _______ on the inlet side of the pump, which allows atmospheric pressure to force the water into the suction line.
    A pump works by creating a _negative pressure_ on the inlet side of the pump, which allows atmospheric pressure to force the water into the suction line.
  11. One pound of pressure will lift a column of water _____ feet.
    One pound of pressure will lift a column of water _2.31_ feet
  12. To convert feet of head to psi, multiply by ______.
    To convert feet of head to psi, multiply by _0.433_.
  13. List four types of pressure tanks
    • standard galvanized tank
    • floating disk
    • bladder
    • diaphragm
  14. An air volume control is used on a bladder-type pressure tank.
    a) True
    b) False
    b) False
  15. There is no contact between the water and the tank when the _______ type of pressure tank is used.
    There is no contact between the water and the tank when the _bladder_ type of pressure tank is used
  16. What are five steps for selecting and sizing of a private water system?
    • discharge pressure
    • suction pressure
    • pump capacity
    • two-pump system
    • type of pump
  17. What is the meaning of the acronym psi?
    pounds per square inch
  18. What is the meaning of the acronym USgpm?
    United States gallons per minute
  19. What is the meaning of the acronym Igph?
    Imperial gallons per hour
  20. What is the meaning of the acronym Lpm?
    Litres per minute
  21. List two things that will happen if the wire size to the pump is too small to adequately meet the power requirements
    • The expected life of the electric motor will be reduced
    • Electric energy will be lost in the form of heat in the feeder circuit
  22. List two reasons why a well must be protected from surface water
    • surface water could contaminate the well
    • surface water could puddle and freeze, damaging piping and other components.
  23. List four different types of wells
    • drilled
    • driven or jetted
    • dug
    • bored
  24. You notice a reduction in the amount of water available from the well and a scale formation is present on the surface of the plumbing fixtures. What is the problem and how would you correct it?
    This problem is corrected by cleaning the pump and acidizing of the well by a licensed well driller.

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