Joints between no-hub cast iron and any other approved material shall be made with a ________ transition coupling.

The joints between no-hub cast iron and any other approved material are required to be made with a solid band transition coupling. This type of coupling provides a secure and reliable connection that accommodates the different materials while ensuring a tight seal. Solid band couplings are designed to handle the structural and pressure demands of plumbing systems, which is crucial for maintaining the integrity of the system.

Using a solid band also helps to mitigate issues such as leaks and misalignment that can occur during installation or over time due to temperature changes, ground movement, or pressure fluctuations. The design of solid band couplings ensures that they effectively bond different types of piping materials, which is especially important when transitioning from cast iron to other materials like PVC or ABS.