What is a 'slip joint' fitting?

A slip joint fitting is designed specifically to connect two pipes while allowing for movement or adjustments in pipe length. This capability is especially useful in systems where expansion and contraction due to temperature changes can occur, as it accommodates these variations without causing stress on the pipes or connections.

The design of a slip joint typically includes a male end that can slide into a female end, creating a flexible connection. This flexibility means that should the pipes expand or contract, the slip joint can adjust accordingly, maintaining a seal and preventing leaks. Slip joints are commonly found in plumbing applications, such as in sinks and faucets, where the movement of water can lead to changes in pipe length.

In contrast to this, other types of fittings—like those that connect pipes rigidly—do not allow for such movement and are used primarily when a fixed connection is required. This is what makes slip joints particularly valuable in situations where flexibility is needed due to environmental changes.