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Ultimate Plumbing Knowledge Quiz
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What is the main purpose of a 'pressure regulator valve' (PRV) installed where the main water line enters a house?
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Hint
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50-50
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Audience
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A
To increase low water pressure from the city
B
To reduce excessively high water pressure from the city
C
To filter sediments from the water main
D
To prevent water from flowing back into the main
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