What is the primary function of couplings in a water system?

The primary function of couplings in a water system is to compensate for alignment changes. In pipe systems, the alignment of pipes can be affected by various factors such as ground movement, thermal expansion, or installation inaccuracies. Couplings are designed to bridge the gap between misaligned pipes, allowing for some movement while maintaining the integrity of the joint. This capability helps to prevent stress on the pipes that could lead to leaks or fractures, ensuring a reliable and effective water transportation system.

While couplings can facilitate connections between different pipe sizes and contribute to watertight seals, their main role is to provide flexibility in positioning. This flexibility is crucial for maintaining the durability and functionality of the entire water system, particularly in environments that may experience shifting or other stresses.