Florida Home Inspector Practice Test

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What is the lightest type of copper piping?

  1. Type L

  2. Type K

  3. Type M

  4. Type D

The correct answer is: Type M

The lightest type of copper piping is Type M. This designation refers to a specific thickness of the pipe wall, with Type M having the thinnest walls compared to other types of copper piping. It is often used in residential plumbing systems due to its lower cost and lighter weight, making it easier to handle and install. Type L and Type K have thicker walls and are generally used for applications requiring more durability and pressure, like in commercial plumbing or underground applications. That is why Type M is recognized as the lightest option among the commonly used types of copper piping. Type D is not a recognized standard in the types of copper piping typically referenced in plumbing, contributing to the clarity that Type M is the correct answer.

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