Radiator needs bleeding every day

Ergates

When the gas is coming out put your mouth over the bleed valve and take a lungful.  Then speak.   If you sound squeaky it's hydrogen.

If you collapse to the floor and frothy blood starts coming out of your nose it's something else.

[Deleted User]

....... 🤣🤣

Belenus

grumbler said:

You can try collecting the gas when bleeding the radiator. If this really is hydrogen,  you can trap it into an upside-down tin can. Then... https://www.youtube.com/watch?v=Rfl6vgq7EIA

Is that a poor man's H Bomb?

North Korea may be interested.

coffeehound

qsk said:

One of my radiators (highest of the house) needs bleeding every day and there is always air coming out. This has been going on for weeks.  I examined surrounding area and could not see any leak. The boiler pressure does not show significant drop. The pipes were cleaned in the summer and refilled.

Anyone got any idea what could be the reason? Could sludge in the radiator causes this (this particular radiator was not cleaned)? Thanks.

What's your water like?  Is it acidic at all?  Private supply?  

coffeehound

Bendy_House said:

https://www.youtube.com/watch?v=LKBEWdwjEAc

Heh, brilliant

Bendy_House

I'm not sure that wasn't staged, but it's darned scary regardless!

qsk

coffeehound said:
What's your water like?  Is it acidic at all?  Private supply?  

I live in a hard-water area. The water coming out of the radiator after the air is quite bubbly for a short time. Not sure if it is acidic (dare not to taste it  but looks like lemonade. 

Another_Level

The 18 year old radiator may be the culprit, as a test it could be fully turned off using both valves.  Leave it off for a week then see if any other radiators gets excessive air or gurgling sounds from the ch pipes.

Is the 18 year old radiator a standard radiator like in the flame video,above. 

2L of inhibitor, sounds like a large installation. Is it a town house on many levels ? How many radiators are installed? Expansion vessel capacity would have been calculated before installing the new boiler.

Expansion vessel is it integral to the boiler, what's the age. They do need periodic servicing (often not done ).

Some boilers have internal automatic air release valves, some installers fit extra aav's on the system. Sometimes in the wrong locations.

Its all fixable, doubt the warranty will help.

  

Bendy_House

No, don't taste it...!

Qsk, if you aren't going to test the gas for being hydrogen - and I can't blame you - then there isn't much else you can do for now.

AL's idea of shutting that rad off at both ends is a good one, tho'. If the gas/air is coming from the EV, then it should likely end up in the next highest rad instead, unless the auto air-vent in the boiler shifts it first.

With any rad, before you turn the 'lockshield' valve (the one that isn't the temp-control valve), first note exactly where the spindle is positioned. This is best done using a bit of paper and tape, or perhaps a felt-marker. You need to be able to record how many turns and part-turns it takes to fully shut off, so it can be returned to the same position afterwards. This should keep the rads 'balanced' (provided they were balanced in the first place...)

Report back if you shut off that rad.

Other than that, if it's corrosion, then it'll just carry on as it is - you keep releasing 'air', and finally your rad falls apart   But if it's the EV, then it'll soon run out of compressed air, so you'll see lesser amounts being bled, but also the pressure of your system will start to go awry.

coffeehound

Since it's apparently some chemical reaction to the new fill of water going on, presumably it will settle again at some point?