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Water hammer arrestors are devices designed to mitigate the effects of water hammer, which occurs when a fluid in motion is forced to stop or change direction suddenly. The primary reasons for using a water hammer arrestor revolve around managing the physical impacts of sudden water flow changes.

One key function of a water hammer arrestor is to absorb shock waves that travel through the plumbing system when valves close abruptly. This absorption helps to reduce the stress placed on pipes and fittings, ultimately minimizing potential damage.

Additionally, water hammer arrestors play a significant role in noise reduction within a plumbing system. When water hammer occurs, it can generate loud banging or clanging sounds, which can be disturbing, especially in residential settings. The arrestor helps to dampen these sounds, leading to a quieter system.

Preventing pipe damage is another important function of a water hammer arrestor. By absorbing the shock from sudden changes in water flow, these devices help protect the integrity of the pipes and prevent leaks or breaks that could arise due to the intense pressures generated by water hammer.

In contrast, controlling water temperature is not a function served by a water hammer arrestor. The arrestor does not influence the thermal properties of the water, as its design and purpose are strictly related to the management