Hi there,i have just returned from work and noticed my overflow has been leaking.I have main water tank in loft with smaller one(header i think its callled)next to it.The adjuster part of the ballfloat looks to have snapped off(again i'm not sure if this is correct term) and the whole ballfloat looks to have seen better days.How hard/easy is this to replace and do i need a professional and also can i do anything in the meantime to stop this overflowing.Hope someone can advise,thanks
overflow leaking
- Thread starter thompa
- Start date
easy enough to change
tie it up for the mo if there isnt an isolator
tie it up for the mo if there isnt an isolator
Hi,have tied this up but still water overflowing,am i doing something wrong.easy enough to change
tie it up for the mo if there isnt an isolator
turn the water off and run a hot tap 
D
dextrous
If the valve has had it and won't close, you'll either need to turn off the isolator valve to stop water being supplied to it, or turn off the water at your main stopcock if there isn't one near it. Remember to fill your kettle tonight for your cuppa tomorrow morning.
and a bucket for the netty
D
dextrous
No need to run a hot tap - it'll stop overflowing in due course if no more water is supplying it. Kev, just thinking about waste of heat
You are talking about the main tank (the CWS - cold water storage) and not the smaller one (called the feed and expansion tank or "FE")aren't you?
You are talking about the main tank (the CWS - cold water storage) and not the smaller one (called the feed and expansion tank or "FE")aren't you?
D
dextrous
Unless it's gravity fedand a bucket for the netty
no,its the smaller one that is overflowing.No need to run a hot tap - it'll stop overflowing in due course if no more water is supplying it. Kev, just thinking about waste of heat
You are talking about the main tank (the CWS - cold water storage) and not the smaller one (called the feed and expansion tank or "FE")aren't you?
D
dextrous
The smaller one is for the central heating circuit. Exactly the same advice as before applies. It's not doing any harm by overflowing, apart from wetting your brickwork outside possibly, but is quite annoying and will need replacing. Parts are cheap and simple to replace if you've got a spanner, plus get a replacement 1/2" fibre washer while you're at the DIY store. When you replace it (preferably with a brass ballcock valve since you can adjust the depth of the water by bending the arm if you have to), set it so that there's only an inch or so of water within the tank.
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