Gas Heat ESCO Practice Exam 2025 - Free Gas Heat ESCO Practice Questions and Study Guide

Question: 1 / 400

Type B Vent pipe is constructed with an inner pipe and outer pipe. The inner pipe is made of:

Aluminum

The correct answer is A, aluminum. B, copper, is incorrect because copper is not typically used for vent pipes. Copper is more commonly used for plumbing pipes. C, galvanized steel, is incorrect because while it is a common material for vent pipes, it is used for the outer pipe rather than the inner pipe. D, stainless steel, is incorrect because it is not used for vent pipes due to its high cost and difficulty in working with.

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Copper

Galvanized steel

Stainless steel

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