Illinois Plumbing Code Practice

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Prepare for the Illinois Plumbing Code Test! Enhance your skills with diverse multiple-choice questions and detailed explanations. Ace your plumbing exam with ease!

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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What size opening is permissible for the orifice of a drinking fountain nozzle?

1/2 of an inch
3/8 of an inch
1 inch
7/16 of an inch

The correct answer is: 7/16 of an inch

The permissible size for the orifice of a drinking fountain nozzle is specifically defined to ensure appropriate water flow and usability for the user. A 7/16-inch opening allows for sufficient water pressure while maintaining a reasonable flow rate that prevents excessive splashing and waste. This size balances the need for accessibility with health and safety standards, ensuring that the water delivered is adequate for drinking purposes while reducing the risk of contamination through excessive water splatter. In the context of the other sizes, such as 1/2 inch and 1 inch, these openings may lead to larger flows that could compromise the drinking fountain’s function and hygiene. A 3/8-inch opening, while closer to the correct size, may not provide enough flow for practical use in a drinking fountain. Therefore, a 7/16-inch orifice is the optimal choice according to plumbing codes that regulate the functionality and safety of such installations.