Plumbing |
I hear a loud banging sound when I turn off a faucet. What causes this problem? The loud banging/knocking sound is known as ‘water hammer’ and is a problem that can cause plumbing components - water heaters, valves, seals, joints, and pipes – to fail prematurely. Water hammering is caused when a valve shuts off water flow and a high intensity pressure wave travels back through the piping system until it reaches a point of relief. The pressure will then surge back and forth between the point of relief and the point of stoppage until the destructive energy is dissipated. The only way to stop this destructive force is to install a water hammer arrestor. Water hammer arrestors should be located as close as possible to the source of the shock wave. Arrestors have diaphragms that separate an air chamber from the water in the piping system and the air chamber absorbs the shock rather than your plumbing. Know your plumbing! Winterizing Your Plumbing
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