Page 71 – American Water College

Fire Hydrants & Valves

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Post published:January 19, 2017
Post category:Certification Exams Distribution Water Treatment

Type of fire hydrant used in locations that freeze. The main valve is located below ground and a drain valve allows water to drain from barrel when the main valve…

Sample Preservation

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Post published:January 18, 2017
Post category:Certification Exams Distribution Water Treatment

Click on the “+” symbols to learn about sample preservation methods

Disenfection

Post author:
Post published:January 18, 2017
Post category:Certification Exams Distribution Water Treatment

The purpose of the vacuum relief valve in the line going to the chlorine injector is: