Looking for some plumbing advice .
Upstairs on suite toilet is having problems flushing .
Reckon the Syphon is gone in it . We replaced the one in the downstairs bathroom & that solved a similar issue . But oddly in the upstairs toilet there’s no valve to turn off the water supply , just has what appears to be the pipe supplying the water . Any ideas where to turn off the water to this toilet
Just took some pics from the hot press upstairs which , if any of these valves might turn it off ( water to upstairs toilet )
I also read you might be able to turn off the supply from a valve under the sink in the kitchen