Partially Filled Cistern

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Glamorgan
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Hi All
This is a pic of one of my cisterns.
You can see the old watermark showing the cistern is not filling completely.
No obvious adjustment is visible.
Any advice please?
Cheers
Doug
 

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Turn the water off and then after flushing, mop out the remaining water. Remove the filling valve and overhaul or replace it with one of a more reliable make. Now that said, the fill valve will have a means of adjusting the shut-off level somewhere that might not be obvious.
My old eyes can't even see what brand it is, but more photos from different angles might help
 
Hi All
This is a pic of one of my cisterns.
You can see the old watermark showing the cistern is not filling completely.
No obvious adjustment is visible.
Any advice please?
Cheers
Doug
Adjustment may not be obvious, but it will be there somewhere, as Scally-Ho says
 
Last edited:
It appears that I can just slide up / pull up the main body to increase depth of water?
Is it that simple?
No clips to undo?
 

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