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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 is closed.
Click on the “+” symbols to learn about sample preservation methods
The purpose of the vacuum relief valve in the line going to the chlorine injector is:
Addition of chlorine to water until the chlorine demand has been satisfied. At this point, further additions of chlorine will result in a free chlorine residual that is directly proportional to the amount of chlorine added.
Click on the “+” symbols to learn about peristaltic pumps.
Following maintenance on a water storage tank, the tank must be disinfected and a ___________ test must be performed. The bacteriological test must be negative before the tank is placed in service.
A valve that automatically stops water flow when water level in a storage tank reaches a predetermined level.
Classify the different types of public water systems.