Which plumbing fixture is wall-mounted and receives only liquid waste?

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Study for the NOCTI Plumbing Test. Prepare with flashcards and multiple choice questions, each question comes with hints and explanations. Ensure your success on the exam!

Multiple Choice

Which plumbing fixture is wall-mounted and receives only liquid waste?

Explanation:
Urinals are designed specifically for liquid waste and are typically installed on the wall, making them wall-mounted by design. They handle urine only, unlike toilets which take both liquid and solid waste and are usually floor-mounted (though some wall-hung models exist). Sinks drain liquids (and small solids) and aren’t restricted to liquid waste only, and sewer cleanouts are access points rather than waste-accepting fixtures. So the fixture that fits both criteria—wall-mounted and receiving only liquid waste—is the urinal.

Urinals are designed specifically for liquid waste and are typically installed on the wall, making them wall-mounted by design. They handle urine only, unlike toilets which take both liquid and solid waste and are usually floor-mounted (though some wall-hung models exist). Sinks drain liquids (and small solids) and aren’t restricted to liquid waste only, and sewer cleanouts are access points rather than waste-accepting fixtures. So the fixture that fits both criteria—wall-mounted and receiving only liquid waste—is the urinal.

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