by Handy__Andy »
Mon Sep 08, 2014 6:41 pm
If the cistern is continually filling either the ballcock is catching or stuck on something or its faulty keeping the valve open.
Or
you mean the toilet pan is still filling? if so the siphon it faulty not the water valve. (Change the big thing in the middle) Turn and pull out or you may have to remove the cistern from the pan to get underneath to the fixings if its an older toilet.