Water Distribution Manager (WDM) Greenbook 2 Practice Exam

Foot valve is placed at the bottom of which pipe of a pump?

Suction Discharge Supply Return

Correct Answer:

Suction

Explanation:

A foot valve is fitted on the suction line, placed at the bottom so it can hold a full column of water in the suction pipe. This keeps the line primed and prevents water from draining back into the source when the pump stops, so the next start is easier and quicker. It’s on the suction side because it’s purpose is to maintain prime and prevent backflow; putting a valve on the discharge line would obstruct pumping, and terms like supply or return aren’t where a foot valve is used.

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