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Can my WC flush valve be repaired in situ?

Show me a picture and I can show what you need to fit or to adjust.

Andy
Whoops, forgot to add pictures in last post.

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Ok, turn the water supply off, lift the arm up and turn 90 degrees. This should then make the top part come off, check and clean out the washer, you made need to replace the washer.

Or buy a new valve and fit this one, but it means pulling the toilet out:


Make sure you get the brass bottom.

Andy
 
Bastid flush valve has gone again! Okay if a full flush but with a half flush, it constantly trickles and refills. Why only on a half flush though?
 
It’s not the fill valve Andy, it’s the flush valve letting by on a half flush. It’s not overfilling and going down the overflow tube, it’s letting the level drop enough for the fill valve to start filling again. Only on a half flush, not a full one!
 
Yeah, I suppose I’m going to have to. Only replaced it 2 years ago. Thought it might have lasted longer than that.
Been out all day taking the grandson to London zoo. I tied the float valve up before we went out as it was getting worse. Got home at half past seven. Went straight up to it, took the main body off, flipped the seal round, fitted it back in, still píssing out into the pan. Quickly shot up to Screwfix, bought a new one before they shut, came back, fitted the top piece….and if was effing worse! I thought it had to be something to do with the lower part of the body which would mean removing the whole thing to replace it. I got a torch and had a proper look at the lower piece and fúck me if I didn’t see a tiny thread of clear silicon laying across the seat of the lower piece of the flush valve - that was what was preventing the seal from doing its job. Pulled that out, refitted the original flush body and it was all good! At least I have a spare - I’m going to take the whole thing out at a later date to fit a new fill valve anyway so I’ll fit the complete top and bottom parts of the new flush valve.
 

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