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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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I keep getting air in one Radiator?
For as long as I can remember, one of my radiators makes a racket... I
bleed it and the noise goes away, but a few days later it comes back. Every time I have tried to fix it (by keep bleeding it), the summer comes and I give up. The problem is back now and I want to fix it.. I have bleed it 3 times this week already and again today, there is air in it? What can I do? Where is the air coming from? Why is it always this one radiator? Any tips would be appreciated All the best Jon |
#2
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I keep getting air in one Radiator?
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#3
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I keep getting air in one Radiator?
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#4
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I keep getting air in one Radiator?
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#5
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I keep getting air in one Radiator?
In an earlier contribution to this discussion,
Fatboise wrote: First off, you need to determine whether it *is* air - or hygrogen. The latter is caused by corrosion if there is insufficient (or no!) corrosion inhibitor in the system. Next time you bleed the rad, collect some this 'air' in an upturned jam jar and then apply a lighted taper to it. If it burns with a blue flame, it's hydrogen. Can somebody please explain how to test for hydrogen as mentioned above I'm afraid I don't understand the explanation - D'oh If you hold a lighted match or taper in the stream of gas coming out of the bleed hole, you can tell whether it's air or hydrogen by its behaviour. If it's air it will have no effect, or may even blow the flame out. If it's hydrogen, the hydrogen itself will burn with a blue flame. But it might also set fire to surrounding objects - which was why I suggested doing it in two stages. Because hydrogen is a lot lighter than air, it will rise - so if you hold a jamjar upside down, with the open part just above the bleed screw, any hydrogen will collect in the jar. If you then introduce a burning taper up into the jar, you'll see whether or not the collected gas burns. If it *does* it will do so in a more controlled way, without setting fire to the whole house! -- Cheers, Roger ______ Please reply to newsgroup. Reply address IS valid, but is disposable in the event of excessive spam. |
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