Image: Heritage Bathrooms
1 Turn off the mains water and flush the WC. Remove the ballcock by twisting it off the arms of the valve.
2 Scoop out any remaining water with a cup. Then mop the rest out, along with any dirt or loose particles, with a cloth or sponge.
3 Use an adjustable spanner to loosen the nut that links the cold water feed into the cistern.
4 Remove the pipe – but have a bowl underneath to catch any remaining water.
5 Unscrew the other nut, which will be holding the cistern valve in place and lift the unit out of the cistern.
6 Make sure you have bought the same replacement fitting as the original – side, bottom or top entry – and follow the instructions.
Sometimes all that’s needed to fix a leaking valve is a new washer. The modern type of valve uses a diaphragm washer, repair kits are also available for the older types.
These step-by-step images are taken from the Haynes Women’s Home DIY Manual by Kerrie Hanafin, available to buy for £12.99. The new paperback edition is full of practical step-bystep guides to a wide range of home renovation projects, from essential tools to understanding electrical circuits and laying flooring.