What component absorbs motion between resilient mounted machinery and fixed mounted piping systems?

The correct choice, a flexible hose assembly, is designed to absorb motion and accommodate the relative movement between resilient mounted machinery and fixed mounted piping systems. This component allows for flexibility in the arrangement and can effectively handle vibrations, thermal expansions, and misalignments that may occur due to the dynamic nature of the machinery it connects to the piping system.

Flexible hose assemblies are particularly beneficial as they can absorb motion in multiple directions, offering a greater degree of freedom compared to other components. This is crucial in preventing stress and strain on the piping systems, which could lead to leaks or failures.

While flexible couplings also help in accommodating some misalignment and vibrations, they are primarily intended to connect rotating shafts and are typically less effective in isolating the motion from a resilient mounting system to a fixed piping system. Rigid pipe supports, as the name suggests, provide a fixed and stable support that does not allow for movement, making them unsuitable for this application. Expansion joints address changes in temperature-induced expansion but are often not as flexible in mitigating the dynamic motion associated with machinery.