What determines the size of a rigid fluid line?

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Prepare for the ASA Aviation Maintenance Technician General Test. Utilize flashcards and multiple-choice questions with hints and explanations. Ace your exam!

Multiple Choice

What determines the size of a rigid fluid line?

Explanation:
The size of a rigid fluid line is determined by its outside diameter. The external dimension is what fittings, clamps, and routing are built to match, ensuring a proper fit and seal. The inside diameter can vary with wall thickness, so two lines with the same outside diameter can have different bore sizes and strength. Nominal diameter is just a rough designation used in piping terminology and doesn’t represent the actual external size used for fittings. Wall thickness affects the internal bore and pressure rating, but it doesn’t set the line’s overall size.

The size of a rigid fluid line is determined by its outside diameter. The external dimension is what fittings, clamps, and routing are built to match, ensuring a proper fit and seal. The inside diameter can vary with wall thickness, so two lines with the same outside diameter can have different bore sizes and strength. Nominal diameter is just a rough designation used in piping terminology and doesn’t represent the actual external size used for fittings. Wall thickness affects the internal bore and pressure rating, but it doesn’t set the line’s overall size.

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