Removal of toilet flush valve

26 May 2011
Reaction score
United Kingdom
I have an Impulse 'Cascade' toilet cistern (oval push button). There is water leaking slowly into the toilet pan and a small 10 second flush happens every 30 minutes or so as the level drops.
I suspect the washer at the base of the flush valve unit needs renewal. Is this flush valve removable without taking the cistern off the toilet bowl?
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Going to need a photo of what`s inside the cistern but the chances are good.
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Hard to be certain from here but don`t think it is a Twist & Release type, can you see 3 equally spaced lugs down there?
I think I'm going to have to remove the cistern. Seen a few photos elsewhere, and there is a threaded section at the bottom of the valve tube. This suggests there will be a locknut under the cistern which holds it in place. Thanks for your help anyway. That's my job for tomorrow sorted out!

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