Foghorn sound - driving me nuts!! Help

  • Thread starter Thread starter Kp090
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Dr Bodgit said:
Part 2 BV is under a tenner https://www.screwfix.com/p/pegler-float-valve-part-2/27627 you'll need the float as well!

Thud noise could be related, or it could be the toilet ball valve suddenly closing and causing a vibration.
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Cheers mate, seriously really appreciate the link and all the advice!! The toilet ball comes up quite smoothly so hopefully when the loft tank is sorted the noise goes.

I do need a decent plumber.. you’re not from Berkshire are you by any chance? Lol
 
Recently swapped the Part 2 valve and cleaned the ball for an elderly neighbour rather than replace the washer. Left the section that connects to the tank alone and just unscrewed the valve from inside the tank and replaced that section, with the water turned off it took 10 minutes max.
 
Psssst - it's an easy DIY fix :)

And you've done this already on your cistern :D

But, of course, if you are happier getting a plumber in, that's fine.

The 'thud' you mentioned when something stops filling is usually down to a certain type of filling valve, not the 'ballcock' type. The ballcock type tends to come to a slow stop as it fills, so no 'shock' when it finally shuts off. But there's another type of valve which looks very different and this fills at the same rate all the way up until it shuts off quickly. I think this type is more likely to cause the 'thud', although it shouldn't if everything is ok.

Mind you, the noisy valve might also be 'loose' inside so this causes the thud as it moves when full.

When the plumber replaces it, give it a test refill whilst he's there to see if that thud remains. If it does, he should be able to trace the cause quite easily, I'd have thought.
 
Allsorts said:
Psssst - it's an easy DIY fix :)

And you've done this already on your cistern :D

But, of course, if you are happier getting a plumber in, that's fine.

The 'thud' you mentioned when something stops filling is usually down to a certain type of filling valve, not the 'ballcock' type. The ballcock type tends to come to a slow stop as it fills, so no 'shock' when it finally shuts off. But there's another type of valve which looks very different and this fills at the same rate all the way up until it shuts off quickly. I think this type is more likely to cause the 'thud', although it shouldn't if everything is ok.

Mind you, the noisy valve might also be 'loose' inside so this causes the thud as it moves when full.

When the plumber replaces it, give it a test refill whilst he's there to see if that thud remains. If it does, he should be able to trace the cause quite easily, I'd have thought.
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I think the foghorn sound is gone and problem solved! Thank you so much!

You guys were right.. it is a quick fix and I probably could have done it myself but either way that bloody sound is gone!

The thud happens after the toilet is filled still but the guy said it’s not that loud anymore and seems all fine so I’ll let it be.

Thanks for the help once again!
 
An old thread, but I've got the foghorn vibrations AFTER putting in a new float valve. The previous one was silent but worn and the overflow was dripping constantly. All the same symptoms - noise happens as the cold water tank on the loft fills, but is eased by lowering the mains pressure (by opening a cold tap). Reducing the pressure via the main stopcock lessens the noise a bit, but the pressure is already quite low. How can a new valve be faulty?
 
Still Hopeless said:
An old thread, but I've got the foghorn vibrations AFTER putting in a new float valve. The previous one was silent but worn and the overflow was dripping constantly. All the same symptoms - noise happens as the cold water tank on the loft fills, but is eased by lowering the mains pressure (by opening a cold tap). Reducing the pressure via the main stopcock lessens the noise a bit, but the pressure is already quite low. How can a new valve be faulty?
Click to expand...
I have this exact same problem. Did you manage to resolve this? Thanks
 
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