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There is an area in the pipe where some air is trapped or the pipe is exposed. The momentum of the water moving through the pipes continues to move the water forward after the valve is shut. This momentum can compress a pocket of air making a sound or it can cause a column of water to rise in a nearby pipe, which will make a clunk when it falls back to its normal level.
What else can I help you with?
What would cause noise in water pipes even when no water is turned on or off?
Depending where the noise was coming from, but this question is most likely to be answered in this way. If you switched a valve off and the noise was coming before the valve in the pipes, that would indicate a burst pipe.
What could be the problem if you hear a loud noise coming from the water pipes in your house?
This is most likely to be water hammer. The most likely reason is because a pipe has not been held down properly with a pipe clamp. It normally happens when a toilet is filling up or when taps are switched off suddenly. Its due to the water pressure in the pipes that makes the water rebound in the pipes causing them to rattle and make a noise
Why do water pipes vibrate when the water is turned off?
Water pipes can vibrate when the water is turned off due to a phenomenon called water hammer. This occurs when the flow of water is suddenly stopped, causing a pressure surge that can create vibrations in the pipes.
What causes the water pipes to hum when turned off?
choir members in your pipes
Will PVC pipes burst if water off?
No
Why do pipes rattle when the water is turned off?
Pipes rattle when water is turned off due to a phenomenon called water hammer. This happens when the sudden stop of water flow creates a pressure surge that causes the pipes to vibrate and make noise.
What should I do if my water pipes burst?
If your water pipes burst, turn off the main water supply, drain the faucets, and call a plumber for repairs.
Why do pipes make noise when water is turned off?
Pipes make noise when water is turned off due to a phenomenon called water hammer. This occurs when the flow of water is suddenly stopped, causing a pressure wave to travel through the pipes and create vibrations that result in noise.
Why does your car clunk when you take off from a stop?
It shouldn't ...
Why do pipes make a knocking sound when the water is turned off?
Pipes make a knocking sound when the water is turned off due to a phenomenon called water hammer. This happens when the flow of water is suddenly stopped, causing a pressure wave to travel through the pipes and create the knocking noise.
Should water meter be turned off if pipes are frozen?
If pipes are frozen no water can flow, so water meter shouldn't be registering anything. But if pipes are frozen it's a good idea to turn the water off at the inlet. That way you have a chance to discover and leaks and damages when the pipes thaw w/o getting the whole place flooded.
What should I do when my pipes freeze?
When your pipes freeze, you should turn off the water supply to prevent further damage, open the faucet to allow the water to flow once it thaws, and use a hair dryer or heating pad to thaw the pipes slowly. If the pipes have burst, turn off the main water supply and contact a plumber for repairs.
