What type of valves necessitates the installation of a water hammer arrester?

The installation of a water hammer arrester is particularly necessary for quick closing valves. Quick closing valves are designed to shut off water flow rapidly, which can create a sudden change in water pressure within the plumbing system. This rapid change can lead to a shockwave, known as water hammer, which can cause banging noises in the pipes and potentially lead to pipe damage or other plumbing issues.

Water hammer arresters are devices specifically designed to absorb this shock by providing a cushion of air or other material that dampens the sudden pressure change. By installing a water hammer arrester in conjunction with quick closing valves, the potential for damaging hydraulic shock is significantly reduced, helping to maintain the integrity of the plumbing system.

In contrast, slow closing valves, quick opening valves, and standard valves do not create the same rapid pressure changes that quick closing valves do, hence they typically do not require the same level of protection against water hammer. Understanding this mechanism helps in the proper design and implementation of plumbing systems to minimize noise and damage caused by rapid valve operations.