HOW TO REPLACE A BALLCOCK AND FLOAT VALVE – If your toilet is not flushing properly, or it’s over filling then the chances are the ballcock or float valve is broken. Leaving the cistern to over fill results in a lot of wasted water and money, so let’s save water and save money by replacing them. Replacing these is a very easy job and in this guide we’ll show you how to do it with easy to follow steps.
Remove the lid from the cistern and determine the type of Ballcock / Float Value you have. Purchase a new one from your local DIY Store. If you are not sure of the type you need, then turn off the water and flush the toilet to drain the cistern and then remove the ballcock / float valve and take this along to the store with you. The staff will be able to help you in selecting the right type for you.
You can tell if the ballcock is not working properly as it may be leaking from the joints. This can cause the water to continue to rise and overflow even when the ballcock is at its full height.
Unscrew the float arm and remove the ballcock. Use a sponge to soak up any remaining water in the cistern.
Using an adjustable wrench grip the nut on the water pipe that connects to the cistern. With your free hand hold the float valve and then unscrew the nut with the wrench. Once the water pipe is disconnected you can remove the existing float valve.
Take the new float valve and slot this into position, where the old float valve was. From under the cistern screw on the locking nut and tighten and then reconnect the water pipe on the cistern.
Take your new ballcock and screw the arm onto the float valve and tighten with an adjustable wrench.
Turn your water supply back on and check for leaks from the water pipe to the cistern.
As the wall rises so too will the ballcock. Check to ensure the ballcock does not rub against the sides of the cistern and that it rises freely.
Once the cistern has finished filling check that it fills to the marked water line and that the connection between the valve and ballcock is not leaking. If the cistern does not fill to the water line then adjust the float arm by adjusting the screws on the arm at the base.
Test the toiled by flushing it and make any adjustments as needed. Replace the cistern lid and you’re finished.
Acknowledgements: Video – WoodiesDIY.com