IFSTA Essentials CH14 Water
Supply Questions with Accurate
Answers
A check valve that prevents water from flowing back into a system and
contaminating it. correct answer Backflow Preventer
A mechanical device installed in a discharge line that senses the amount of water
flowing and provides a readout in units of gallons per minute (GPM) correct
answer Flowmeter
A principal pipe in a system of pipes for conveying water, especially one installed
underground correct answer Water Main
Advantages of grid or loop water distribution systems correct answer 1) designed
to provide constant flow or pressure when pipes or the grid must be repaired
2) high demand in one area does not reduce water flow in other areas
Also called a catch basin, "fold-a-tank", portable basin.,or porta-tank correct
answer Portable Water Tank
Control valve that uses a flat circular plate in a pipe that rotates 90 degrees across
the cross section of the pipe to control the water flow. correct answer Butterfly
Valve
Control valve used to control underground water mains that provides a visual
means of indicating "open" or "shut" position. found on the supply main of
, installed fire protection systems. correct answer Outside Stem and Yoke Valve
(OS&Y)
Control valve with a solid plate operated by a handle and screw mechanism;
rotating the handle moves the plate into or out of the waterway. correct answer
Gate Valve
Diameter size ranges of distributor water mains in water distribution systems
correct answer 6- 8 inches
Diameter Size ranges of primary feeder pipes in water distribution systems
correct answer 16- 72 inches
Diameter size ranges of secondary feeder pipes in water distribution systems
correct answer 12-14 inches
Factors to calculate volume of water supplied in water shuttle operations correct
answer Total gallons carried by each apparatus divided by the total time will equal
gallons per minute being supplied.
Fire hydrant located on a dead end main that receives water from only one
direction. correct answer Dead End Hydrant
Fire Hydrant markings according to IFSTA. correct answer Class AA 1,500gpm Light
Blue
Class A 1,000-1,499gpm Green
Class B 500-999gpm Orange
Supply Questions with Accurate
Answers
A check valve that prevents water from flowing back into a system and
contaminating it. correct answer Backflow Preventer
A mechanical device installed in a discharge line that senses the amount of water
flowing and provides a readout in units of gallons per minute (GPM) correct
answer Flowmeter
A principal pipe in a system of pipes for conveying water, especially one installed
underground correct answer Water Main
Advantages of grid or loop water distribution systems correct answer 1) designed
to provide constant flow or pressure when pipes or the grid must be repaired
2) high demand in one area does not reduce water flow in other areas
Also called a catch basin, "fold-a-tank", portable basin.,or porta-tank correct
answer Portable Water Tank
Control valve that uses a flat circular plate in a pipe that rotates 90 degrees across
the cross section of the pipe to control the water flow. correct answer Butterfly
Valve
Control valve used to control underground water mains that provides a visual
means of indicating "open" or "shut" position. found on the supply main of
, installed fire protection systems. correct answer Outside Stem and Yoke Valve
(OS&Y)
Control valve with a solid plate operated by a handle and screw mechanism;
rotating the handle moves the plate into or out of the waterway. correct answer
Gate Valve
Diameter size ranges of distributor water mains in water distribution systems
correct answer 6- 8 inches
Diameter Size ranges of primary feeder pipes in water distribution systems
correct answer 16- 72 inches
Diameter size ranges of secondary feeder pipes in water distribution systems
correct answer 12-14 inches
Factors to calculate volume of water supplied in water shuttle operations correct
answer Total gallons carried by each apparatus divided by the total time will equal
gallons per minute being supplied.
Fire hydrant located on a dead end main that receives water from only one
direction. correct answer Dead End Hydrant
Fire Hydrant markings according to IFSTA. correct answer Class AA 1,500gpm Light
Blue
Class A 1,000-1,499gpm Green
Class B 500-999gpm Orange
