Is this a problem that a section of air bleed screw is rattling around in the radiator
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Rad is off and flushed it but it won’t come out- it’s a myson round top radiator, it’s the thread to the nut and bleed valve probably 6mm in diameterYes depending on where it ends up; blocking a valve or scoring a valve seat so that it won’t shut off properly, blockings waterway in the boiler etcetc.
Best to remove the rad and flush it out.
Take one of the valve tails out to give it room to come out.
Reply to the thread, titled "Broken air bleed valve has gone into radiator" which is posted in Air Sourced Heat Pumps Advice Forum on Plumbers Forums.
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