For what reason might a hanger be used in flexible sprinkler installations?

In flexible sprinkler installations, using a hanger is essential to support the weight of the system. Hanging systems are designed to be lightweight, but they still require proper support to ensure that they remain securely positioned. The hanger ensures that the pipes and components do not sag or drop, which could lead to structural issues or even system failure if the components become dislodged.

In addition to providing structural integrity, supports also help to maintain proper alignment of the sprinkler heads, which is critical for even distribution of water during operation. Properly supported systems reduce stress on the connections and reduce the risk of leaks that could arise from improper alignment or excessive movement.

The other choices relate to functions that are not typically associated with hangers in sprinkler systems, as they serve specific purposes unrelated to structural support. This highlights the critical role of hangers in contributing to the overall reliability and effectiveness of a flexible sprinkler system.