Term
Which type of valve would be the best to use to precisely throttle
flow?
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Globe valve Lift check valve
Ball valve Needle valve
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, 2 of 142
Term
Water mains should primarily be sized based on
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minimum flow for irrigation peak domestic demand at low
purposes pressure
average daily consumption at high adequate fire flow at an
pressure appropriate pressure
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3 of 142
Term
in what type of water storage system does water generally "float" on
the system?
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Emergency Storage Demand Storage
Flow Hydrant Operating Storage
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4 of 142
Term
The volume of a sample for coliform compliance is?
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50 ml 100 mL
200 ml 75 ml
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5 of 142
Term
Which type of valve will prevent the collapse of a pipe?
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Air-and-vacuum relief valve Needle valve
Pressure-relief valve Altitude valve
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6 of 142
Term
What may cause galvanized iron pipe to corrode excessively?
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Direct connection to brass and
Exposure to high temperatures.
other metal fittings.
Encasement in concrete. Contact with plastic fittings.
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7 of 142
Term
Explain the difference between the different tiers of violations.
Which tier is the most serious?
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Tier 1 = 24 hours (most severe)
Tier 2= 30 days Water Hammer
Tier 3= 1 year