Plumbing

Two pipes next to water pipe vibrate (foghorn sound)

Anonymous user 03/03/2024 - 3.29 PM

Two pipes next to the water tank vibrate: Hello, This sound is getting me down. It's a foghorn sound that lasts for initially 3-5 seconds and then starts up a short while later for about a period of 1 minute. The ball valve above the water tank was replaced which reduced the frequency of noise but it is still present. There are some pipes going in and out of the water tank and some pipes next to the water tank. Two of the pipes that are next to the water tank (one of which goes into the above area where the ball valve was replaced) vibrate but the other pipes going into the water tank and one other pipe which also goes into that above area where the ball valve is located do not vibrate. There is no connection to the hot water/radiator being on or the toilet being used or the kitchen/bathroom taps being open when the sound suddenly appears. The plumber had said that if the issue continued the company who deals with the water tank would have to deal with it. But I am unclear whether this is an issue with the water tank as although I can also hear it vibrating when I put my ear next to it, I don't understand why only a couple of the pipes- and not the ones leading into this water tank- vibrate. Is there someone who could best advise on this please? I would be so very grateful. Some extra info: Around the same time: -The radiators were bled and the pressure on the boiler was increased to reach a value of just over one -Previous to the new ball valve being fitted, the foghorn sound would be heard throughout the day. After the ball valve fitting, it can be heard from around 1pm-10pm only -There are two neighbors who are above and next to the water tanker. Thank you for all the replies so far, I have really appreciated it. Another plumber came around today and he thinks the issue is connected to the boiler and water tank. Just to answer some questions: The pressure was topped up before and after the ball valve was replaced. Also, after the ball valve was replaced, the foghorn sound has reduced but still occurs a few times a day. "I would try opening taps and flushing toilets in the property to see if the issue is more apparent when a particular outlet is in use." -The noise does not occur when any outlet is used. And when the boiler is switched off from the socket, the noise still occurs in the water tank and pipes next to it. -The plumber today said that it is not related to the washers so he did not change those. - Plumbrite, you mentioned a failing diaphragm. Where would that be specifically, is it connected to the ball valve? - D & R Property and Plumbing Maintenance, you mentioned an equilibrium ball valve. Is this the same thing as a regular ball valve? Thank you very much for the second reply Plumbrite. Yes, it's not related to water movement or heat. I can hear the vibration in the water tank and two of the pipes next to it, so will have to chase up with the boiler/water tank company. Thank you again.