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Only a Few Can Get 10/15—Are You the Exception?

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Which valve is typically used on main lines?

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Correct

Gate valves are commonly installed on main water supply lines and are used for fully opening or completely shutting off water flow.

Incorrect

Gate valves are commonly installed on main water supply lines and are used for fully opening or completely shutting off water flow.

A Ball valve
B Check valve
C Relief valve
D Gate valve

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