Water Hammer Arrester

A water hammer arrester is a device that absorbs pressure surges in plumbing systems to prevent loud banging noises and potential damage from water hammer. It works by cushioning the shockwave from a sudden flow stoppage, typically caused by fast-closing valves, using a chamber of air or gas separated from the water by a piston or a diaphragm. This protects pipes, fittings, and appliances by dampening the shock and reducing pressure spikes.