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 Post subject: Bleed valve leaking
PostPosted: Sat May 19, 2018 11:09 am 
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Hi,

I have been painting some radiators and noticed that have a couple of radiators which are leaking water from the air vent valve, please see photo below showing the rust around the nut head.

I'd appreciate if anyone could help - can the valve be replaced to fix and if so can the radiator just be isolated with the valves either side?

Thanks


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 Post subject: Re: Bleed valve leaking
PostPosted: Sat May 19, 2018 11:44 am 
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Screwfix do them and plumbers merchants,

https://media.screwfix.com/is/image//ae235?src=ae235/40972_P&$prodImageMedium$

About £3.19 pair at screwfix.

You need to turn off the radiator valves, undo the bleed nut slowly and when the pressure has dropped just unscrew the whole bit and replace with new one.
There may be some water still trickling out so have towels handy.



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 Post subject: Re: Bleed valve leaking
PostPosted: Sat May 19, 2018 2:55 pm 
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Use the above method and put a couple of wraps of gas life or picture string round the threads and you'll be fine. It's almost always the threads rather than the bleed that leaks

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 Post subject: Re: Bleed valve leaking
PostPosted: Sat May 19, 2018 3:20 pm 
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Fantastic thanks, is it odd its that the rad is still leaking even though the input valve is off? Its only making a towel damp but still leaking. Or is it just the pressure in the rad?

Will try and fix this tomorrow, thanks


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 Post subject: Re: Bleed valve leaking
PostPosted: Sat May 19, 2018 10:54 pm 
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Sometimes the valves don't always shut off fully and let a bit of water past,
You have turned both sides off haven't you and turned off the lockshield valve fully remembering how many turns it took :wink:

just make sure you have everything you need with you when you do it.


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