How to replace a toilet ball valve

There are lots of reasons why your lever toilet may not flush. One of the most common problems is the ball valve. If you take the lid off the toilet and there isn’t any water in the cistern, the ball valve needs replacing. I’m going to show you how to do that now.

1. Turn off the isolation valve

   To stop any water get into the toilet you need to get a flat headed screwdriver and turn off the isolation valve a quarter turn

2. Undo the tap connector

   Once you’ve done that, get your adjustable spanner and undo the tap connector anti-clockwise

3. Remove the backnut

   Once we’ve undone the tap connector we need to remove the backnut and get the ball valve out of the system

4. Refit your new toilet ball valve

   Now you’ve done that, take your bow to the nearest DIY store and ask for a replacement. Once you’ve got your new toilet ball valve, put it into the toilet making sure the arm can move freely up and down

5. Replace the fibre washer

   Then replace the fibre washer in the tap connector before joining it to the ball valve (make sure you don’t over-tighten!)

6. Turn the isolation valve back on

   Finally switch the isolation valve back on, then make sure the water doesn’t go over the overflow

7. Check for leaks

   Check there are no leaks on the tap connector, then flush the toilet and your problem should be solved and if not call HomeServe.

Don’t let toilet troubles overflow

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