Replacing an old toilet cistern diaphragm

[mustard990]

Noticed the toilet overflow was dripping a few months back, got round it with the ball cock arm adjuster, but that's no longer working.
Now getting a slow constant drip when the ball cock arm is fully raised.

Checked the ball cock and arm (all good) and cleaned out the diaphragm mechanism. I've concluded the rubber diaphragm washer must be worn out, as I'm still getting the drip.

Tried my local diy shop and they don't have a washer that matches it. I've also started looking online and can't seem to find a match.
I think the toilet is at least 25 years old, so am I waisting my time trying to find a matching diaphragm washer and I need to replace the whole entry valve kit?

I've posted a pic of the washer if anyone has any suggestions? (32mm width, 7mm height).

Many thanks

 

[Wayners]

Just buy another ball valve as cheap. It's not worth the time and effort to locate parts
I stick to fluidmaster brand and just swap out for new.
Your looking at around £10.

 

[mustard990]

Thanks Wayners, was coming around to that conclusion. I'll get a new ball valve kit ordered.

 

[Feck]

Would something like this do. https://www.amazon.co.uk/Toilet-Cis...hvtargid=pla-2281435176618&psc=1&gad_source=1

 

[mustard990]

Would something like this do. https://www.amazon.co.uk/Toilet-Cis...hvtargid=pla-2281435176618&psc=1&gad_source=1

I did have one spare diaphragm washer close to that type and it doesn't quite fit. I was tempted to try those on Amazon, just don't want to throw money at something that might just need replacing.

 

[mustard990]

If the valve is over 25 years old, replacing the whole inlet valve may be the easiest long-term solution. Before doing that, though, it might be worth taking the diaphragm washer to a plumbing supplier, as they may be able to identify a compatible replacement. If you do replace the valve, make sure the new one fits your cistern and pipe connection. A new valve should save you the hassle of chasing an obscure spare part.

Was thinking about that, but nearest plumbing merchant is 30 min drive away and the water feed for the toilet doesn't have an isolator fitted, so have to turn the mains off, it's a real pain. I am leaning towards replacing the bottom inlet ball valve kit and be done with it.

 

[plagueshov]

Would something like this do. https://www.amazon.co.uk/Toilet-Cis...hvtargid=pla-2281435176618&psc=1&gad_source=1 slope

I had a spare diaphragm washer that looked similar, but it didn't quite fit. I was considering trying those ones on Amazon, but I don't want to waste money on something that might need replacing anyway.