What is a hammer arrestor?

A hammer arrestor is a small device that is installed in plumbing systems to prevent or reduce water hammer, which is a loud banging noise in pipes caused by sudden changes in water flow. Water hammer occurs when a fast-moving stream of water is suddenly shut off, causing a shock wave to travel through the pipes and create the noise.

A hammer arrestor works by providing a cushion of air or gas in a chamber that absorbs the shock wave and prevents it from causing the pipes to bang. This helps to protect the plumbing system from damage and reduce noise levels.

Hammer arrestors are typically installed near fixtures or appliances that are prone to causing water hammer, such as washing machines or dishwashers. They can also be installed in other locations throughout the plumbing system to provide additional protection.

Overall, hammer arrestors are a simple and effective way to prevent water hammer and protect your plumbing system from potential damage.