Which part of the bleed-air manifold is capable of expanding or contracting with temperature changes?

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Multiple Choice

Which part of the bleed-air manifold is capable of expanding or contracting with temperature changes?

Explanation:
When the bleed-air piping heats up, it tends to lengthen, and when it cools it shrinks. Expansion joints are designed to absorb that axial length change so the system can grow or shrink without stressing joints, seals, or flanges. They typically use bellows or flexible elements that can compress or extend as temperature shifts occur, keeping the manifold intact. A valve is a fixed control device, an elbow is a rigid bend, and while a flexible hose can bend, expansion joints are specifically meant to accommodate thermal expansion and contraction in piping.

When the bleed-air piping heats up, it tends to lengthen, and when it cools it shrinks. Expansion joints are designed to absorb that axial length change so the system can grow or shrink without stressing joints, seals, or flanges. They typically use bellows or flexible elements that can compress or extend as temperature shifts occur, keeping the manifold intact. A valve is a fixed control device, an elbow is a rigid bend, and while a flexible hose can bend, expansion joints are specifically meant to accommodate thermal expansion and contraction in piping.

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