What is a common function of a water hammer arrestor in plumbing systems?

A water hammer arrestor is specifically designed to absorb shock waves that occur in a plumbing system, particularly when a faucet or valve is closed suddenly. When water flowing through pipes is abruptly stopped, the momentum creates a pressure surge that can lead to loud banging noises, known as water hammer. This sudden pressure change can cause stress and potential damage to the plumbing infrastructure.

The arrestor functions by using an air chamber or a cushion of air to dampen the shock wave. As the pressure surge travels through the pipe, it compresses the air in the arrestor, thereby absorbing the shock and reducing the impact of the pressure wave. This not only prevents noise but also helps maintain the integrity of the plumbing system by minimizing the potential for pipe damage.

While balancing pressure levels, managing water temperature, and improving drainage are important aspects of plumbing systems, they are not the primary functions of a water hammer arrestor. The focus of the arrestor is on mitigating the effects of pressure surges caused by rapid changes in water flow, emphasizing its role as a protective component in plumbing systems.