Possible Causes If the water pressure is too high in your home, it can create a knocking sound known as water hammer. If the sound occurs only when the faucet is turned on, it may be a problem with the faucet, such as a loose washer or debris in the valve opening.Click to see full answer. Likewise, people ask, why is there a banging noise when I turn my tap on? Knocking is Caused by Water Hammer Water hammer occurs when a water supply is suddenly stopped, and the water flowing in the pipes ‘hammers’ against the closed valve. The resulting noise created can be very loud and disturbing. Turning the faucet off carefully may not allow you to avoid water hammer.Likewise, how do you stop water hammer? Follow these steps to try and resolve water hammer: Shut off water supply to the house at the main. Open all the cold water faucets, start with the highest faucet (2nd or 3rd floor) and work to your lowest faucet (first or basement floor). Flush all the toilets in the home. Let water drain from open faucets. Then, why does my sink make a popping noise? Drain Traps The water in the trap seals off sewer gas, preventing it from backing up into the home. If a drain does not have a trap, there may be a strong foul odor emanating from that drain, along with a popping noise. The popping noise is the sewer gas emerging from the drain.Can knocking pipes cause damage?More than just produce an annoying clamor, water hammer can actually damage the pipe connections and joints, resulting in leaks and costly repairs. Or worse, the noise may also indicate a larger problem like excessive pressure in your water supply lines or loose piping.
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