Black pipe reducer and black pipe union are both types of fittings used in plumbing and pipeline systems. While they serve different purposes, they are essential components for creating and modifying piping configurations.
A reducer is used to connect pipes of different sizes, allowing for a smooth transition between them. It reduces the diameter of the pipeline. On the other hand, a union is used to join two sections of pipe together, providing a convenient connection that can be easily disconnected and reconnected.