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Grohe concealed cistern vibrating noise on fill

Joined
21 Jul 2004
Messages
382
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Country
United Kingdom
Hi all,

Got a new Grohe concealed cistern. Testing install. Noticed that just as it gets to the fill point it makes a vibrating noise, quite loud. I've tried turning the pressure down with the isolater, that reduces the noise but it is still there. When all full pressure its even louder than in the video. Any ideas? Any known issues with the grohe cistern?

 
Managed to sort this, for info if anyone has similar issue.

Removed fill valve. Undid plastic nut which houses a small filter. Had some muck in here. Cleaned out the whole thing with water and refit. Quiet as a mouse now.
 
Just in case anyone else does read your first post, turning an isolator valve doesn’t reduce pressure, only flow.
 

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