Illinois Plumbing Code Practice

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Prepare for the Illinois Plumbing Code Exam with our comprehensive quiz that includes flashcards and multiple-choice questions to bolster your understanding of plumbing standards and regulations. Gear up for your test!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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How far above a commercial laundry machine should a vacuum breaker be installed if used?

18 inches
24 inches
26 inches
30 inches

The correct answer is: 26 inches

A vacuum breaker is a device used in plumbing systems to prevent backflow of potentially contaminated water into the potable water supply. When installing a vacuum breaker above a commercial laundry machine, it should be positioned sufficiently high enough to prevent any backflow into the water supply. In this case, the correct answer is 26 inches for the installation height of a vacuum breaker above a commercial laundry machine. This height provides the necessary protection to ensure that any potential backflow from the machine does not contaminate the clean water supply. Option A (18 inches), Option B (24 inches), and Option D (30 inches) are incorrect as they do not meet the optimal height requirement for the effective operation of the vacuum breaker in this specific scenario.