How does increasing pipe Schedule affect wall thickness and pressure rating?

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Prepare for the Local 483 Apprenticeship Exam. Utilize flashcards and multiple-choice questions, with hints and explanations for each. Get exam-ready today!

Multiple Choice

How does increasing pipe Schedule affect wall thickness and pressure rating?

Explanation:
Increasing pipe Schedule means thicker walls for a given nominal size. That added wall thickness lets the pipe resist higher internal pressures, so the pressure rating rises. The outside diameter is set by the pipe size and stays essentially the same, while the bore gets smaller as walls get thicker. So the net effect is that wall thickness increases and the pressure rating increases.

Increasing pipe Schedule means thicker walls for a given nominal size. That added wall thickness lets the pipe resist higher internal pressures, so the pressure rating rises. The outside diameter is set by the pipe size and stays essentially the same, while the bore gets smaller as walls get thicker. So the net effect is that wall thickness increases and the pressure rating increases.

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