What is the purpose of a rolling hanger in a steam piping system?

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In a steam piping system, a rolling hanger serves the crucial purpose of allowing for pipe movement. As steam pipes expand and contract due to temperature changes, it is essential to accommodate this movement to avoid stress and potential damage to the piping system. The design of a rolling hanger enables it to support the weight of the pipe while permitting it to move freely in a horizontal direction. This flexibility helps maintain the integrity of the piping system and prevents issues such as misalignment, wear on joints, or unnecessary vibration.

The fixed support option does not align with the role of a rolling hanger, as it would restrict movement rather than facilitate it. Similarly, an anchor would hold the pipe in place rather than allow for movement, which is contrary to the functionality of a rolling hanger. Lastly, while drainage may be a consideration within a piping system, it is not the primary function of a rolling hanger. Thus, allowing for pipe movement is the key role of this component in managing the dynamics of a steam piping system effectively.

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