When connecting cast iron pipe and fittings of different sizes, what is needed?

When joining cast iron pipe and fittings of different sizes, using an increaser or reducer is essential for creating a proper connection. An increaser is used when moving from a smaller diameter to a larger diameter pipe, while a reducer serves the opposite function, facilitating the transition from a larger diameter to a smaller one. This specifically designed fitting ensures that the flow of fluid is managed effectively and that there is no disruption in the system, preventing issues such as pressure loss or turbulence.

Additionally, this method maintains the structural integrity of the piping system, allowing for efficient connections without the need for overly complex fittings. Increasers and reducers also help to align the physical dimensions of different piping sections, resulting in a more streamlined and reliable installation, which is particularly important when working with cast iron materials that have specific requirements for handling and connection.