While you wait for answers, we may have found some information which could help you.
Click here for Valve Water Constantlycistern constantly fills and runs into toilet pan?
I need new bellows for my macdee pneu-compact 6 litre cistern?
leaking cistern?
where can I get spares for a Derwent Macdee 9.5 inch round syphon ?
Toilet seat?
my toilet wont flush?