Downstairs toilet leaking - overflow pipe

[DIYNovice1979]

Hi,
I've got a downstairs toilet with an overflow pipe. When the cistern is full, there's still a small leak from the valve. I've tried adjusting the ballcock, but not luck.

Taking a closer look, it looks like the seal in the valve has gone. Are these standard parts I can get from any DIY store or do I need to order online?

Thanks in advance
Pete

This video sums up the issue nicely

 

[HERTS P&D]

Fit a new fill valve.

Andy

 

[Exedon]

As above swap out I would use brass shanked fluidmaster valve much quicker fill with less noise.

 

[CBW]

You can get washers if you wish, https://www.toolstation.com/ballvalve-washer-delchem/p74055, recommend as above to change though

 

[DIYNovice1979]

Exedon,
I've had a look at the fluid master, looks good - it is easy to fit and are there lots of different sizes?

Apologies, whilst I've done a bit of DIY, the biggest plumbing job I've done is bleed a radiator!

£2 and 2 hours later, replaced the seal, adjusted the ballon screw several times, done a lot of fiddling and the bugger still leaks!

Thanks

 

[HERTS P&D]

Ok, I take it you fitted a new washer, is the nut tight enough?

Andy

 

[DIYNovice1979]

I believe so, I didn't want to overtighten it - I've tightened by hand to the point where I'm nearly forcing it.

 

[CBW]

Might not be sat properly?