A pipe coupling is a short fitting used to connect two pipes in a plumbing, piping, or gas system, allowing for the extension or repair of pipelines. It provides a secure, leak-proof connection between pipes, ensuring fluid or gas can flow smoothly through the system.

Types of Pipe Couplings:

1. Full Coupling: Connects two pipes of the same size.

2. Half Coupling: Connects a pipe to a fitting or piece of equipment.

3. Reducer Coupling: Joins pipes of different diameters.

4. Slip Coupling: Allows pipe sections to be joined without needing to thread the ends.

5. Compression Coupling: Uses a rubber gasket or seal to compress and secure the connection, often used for repairs.

Materials: Pipe couplings can be made from materials such as steel, brass, copper, PVC, or stainless steel, depending on the system's requirements and the fluids being transported.

Pipe couplings are vital in maintaining the integrity of piping systems, allowing for flexibility in installation, repair, and extension of pipe networks.