Noisy throne

[gcol]

I have a low level toilet in the bathroom. It's always made a bit of noise immediately after you flush it. Last week I took out the pan to lay some laminate flooring and then replaced it when done. I turned the water off at the mains (no local isolator) and opened the cold kitchen tap in case the mains tap wasn't totally off. Now when I flush, it sounds like the QE2's fog horn going off. The noise is only there for about the first 10 seconds of the flush, then it quietens down.
I did search the forum for an answer but there was nothing conclusive. If it's air in the pipe, how do I shift it?
Not sure if it's important, but just in case, we have a combi in the bathroom too.

 

[Nige F]

Change the ballvalve for a fluidmaster..and fit an isolator too

 

[gcol]

Straight up? Will that cure it?

Just been looking on Screfix - do you mean a Torbeck valve?

 

[ChrisR]

Fair chance that just changing the washer will cure it. SOmetimes they decide to oscillate when just starting or just finishing the fill.

 

[gcol]

And the prize for correct diagnosis goes to ChrisR. I daubed Vaseline on the washer in the ball valve. Quiet as a mouse now. If it starts up again, I'll chuck a new washer in there.
At least the little un won't get woken in the middle of the night when it gets flushed now.
Cheers, Chris

 

[Nige F]

Straight up ....Vaseline

 

[gcol]

Straight up ....Vaseline

I **** you not. Remember where you heard it first. I've been known to use Vaseline all over the place - good for chapped lips too.

 

[Nige F]

Never too old for new tricks Lips and car battery terminals