Hi there. I live in a brick house and lately the pipes have started to shudder (not sure how to describe it) after the toilet is flushed. Why is it doing that all of a sudden? The house is about 12 years old...

Does this happen only when the toilet is flushed?

And please tell us what type of toilet fill valve do you have, Thanks.

John

Hi John

Yes it's only when the toilet is flushed and I'm sorry but I have no idea what a fill valve is :|

The fill valve is device inside the toilet tank that allows water in. Does it have a metal arm with a ball or a cylinder? How many toilets? If more than 1, do you hear the noise when either flush? Could be the fill valve or the main pressure reducing valve.

Hello Mozie22,

On top of Ma0641 explanation remove the toilet tank lid look inside tell us what fill valve do you see, see the images below, Thanks.

John

Besides the fill valve, it can also be angle stop ( valve on the wall and below the toilet, connected to water supply pipe ). Close that valve all the way and Open it back. See if that helped

Back to you

Milo

It looks similar to the color picture... I'll need to check if this happens with the 2nd toilet in the house and let you know. Thanks all, your help is really appreciated :)

Hello Mozieee,

Do as Milo has suggested you and see what happens and let us know, Thanks.

John

Ok I closed the angle stop and opened it again. When I listen closely I now think it's not the pipes shuddering, I think it may be what ma0641 said, the fill valve or the main pressure reducing valve. How do I tell which one it is?

Turn off the toilet at the stop. Then open a tub faucet. If you hear the noise, it is the PRV for the house. If you don't hear the noise, it is the toilet.

Just attended a service call with exactly the same problem description. In this case, it was failing Fill Valve. Replaced the Fill Valve, problem solved

Milo

Thank you all. You've been most helpful...