Which type of pipe would be joined using a coupling?

Joining two pipes of the same material with a coupling is a common practice in plumbing and piping installation. A coupling is a fitting used to connect two segments of pipe together, creating a continuous flow path. When both pipes are made of the same material, such as PVC (polyvinyl chloride), it allows for a secure and effective seal, minimizing the risk of leaks.

This connection is particularly beneficial because similar materials typically have compatible thermal and structural properties, ensuring the integrity of the joint under various conditions. Using a coupling in this context simplifies the installation process and facilitates a stronger bond between the pipes.

In contrast, mixing different materials, such as PVC and copper or plastic and metal, can present compatibility issues that complicate the joining process, often requiring more specialized fittings or adapters to achieve a secure connection.