When using mechanical fittings for pipe replacement, what must be ensured?

When using mechanical fittings for pipe replacement, it is essential to ensure that the fittings must restrain the pipe against pull-out forces. This is crucial for maintaining the integrity and stability of the piping system. Mechanical fittings are designed to provide a secure connection that can withstand various internal pressures and external forces that may act on the pipe. If the fittings do not effectively restrain the pipe, there is a significant risk of disconnection, which can lead to leaks, system failures, and potential hazards.

The capacity of the fittings to manage pull-out forces is especially important in scenarios where the pipeline may experience movement due to pressure changes, temperature fluctuations, or ground shifts. Thus, selecting the right mechanical fittings that offer adequate restraint is vital for ensuring the longevity and reliability of the pipeline system.