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if the pipes are warm or hot at the time the coldwater passes though them, it can cause the pipes to cool and contract

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Q: Why do the pipes make noise when the cold water is on?
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Why do the hot water pipes shake and make noise when they are off?

the hot water pips shake because it is passing water throw them and when they do that it can shake and rummble lol


Why is it important to make sure that water pipes do not freeze on cold nights?

Water expands when it freezes. If water pipes are allowed to freeze then the pressure of the expanding ice inside them will fracture the pipes. Then when the temperature rises so that the ice melts, the pipes will leak - with resulting damage.


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


When using hot water the pipes shake and make noise water pressure goes down what is causing this?

Strap and secure pipe to stop shake and noise. Drop in pressure is normal. Try using water on off peak times (if city water).


Why does my cold water pipe make loud ringing noise only when the weather is cold and when we run the hot tap?

It may be in the main cold water shutoff or if you have a water pressure reducer it may be in the reducer manifold


Why does your bathroom sink make a tapping noise when it's not on?

something hitting the pipe, hot water pipe touching cold water pipe, or is it burping noise ? a tapping noise is sharp, do you live in an apartment ? is this a house, lot s of causes,


What can one do with a water hammer arrestor?

One would use a water hammer arrestor in their home's water lines to prevent "water hammer" (knocking), which is the noise pipes make when they have no air pockets to absorb the shock of the water stopping suddenly. To prevent pipes for doing this the water hammer arrestor provides the air needed for shock absorption.


Why do your cold water pipes knock?

The water pipes are not fastened securely, causing a condition known as water hammer. Envision yourself running toward a doorway and just as you get there someone slams it in your face. Bam! Same with water when you turn off a faucet suddenly and the pipes are not fastened properly.


Why do water lines make noise?

The water rush makes the noise


What causes Bathtub taps make a screeching sound?

Depending on what kind of sound you're talking about, all of the taps in my house make a noise. I think that we found out that it was caused by our water pipes vibrating or something...?


Why does metal make noise when it expands or contracts for example hot-water pipes or an iron?

it makes noise because its trying to expand which don't make sence i know but if u take a straitner and you turn it up as hot as u can which on mine is 360 and u turn it off then put it under the sink it will make a craking noise and it will try to cool the straitner but it can burn u still if the water isn't cold enough i have done it and the hospital already nows me hahahahahahaha poor hospital but if u do that then it will crakle but don't do it if u don't want to get burned because u will get burnded no matter wat u do


Why would you not use sodium for making water pipes?

sodium and water often make babies. you dont want your water and your sodium making pipes, do you?