Bleeding an old radiator

JP_

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The radiator in my shower room only gets hot at the bottom, about 3/4 stays cold.
Looks like an oldish type of bleed valve, hexagonal.
Anyway, just bought a key that i hope will fit... but in previous house, the bleed valves had little spouts on them, this doesn't. Is it just a case of turning a bit and letting air etc. escape? Worried if I turn too much it will come out and then ... panic!
 
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Just turn it to release the air, and have an old rag/towel or something similar to catch the water. Be careful with it being old though.
 
Be careful is it is quite unlikely that the bleed valve is hexagonal, unless it is on a decorative type, usually chrome, towel rail / radiator. The valves are usually square headed, although some are fitted into a screw in plug which is itself hexagonal in shape. Suggest photo if you want a better answer.
 
Be careful is it is quite unlikely that the bleed valve is hexagonal, unless it is on a decorative type, usually chrome, towel rail / radiator. The valves are usually square headed, although some are fitted into a screw in plug which is itself hexagonal in shape. Suggest photo if you want a better answer.

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Using your bleed key, turn anti clockwise until air disperses and water appears, close by turning clockwise
 

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yeah, but what key will fit that? Bought a 4-in-1 set, hopefully something will fit!
 
I agree with Dangee. The bleed valve is the relatively shiny bit of brass showing at the centre of the top of the radiator. Should have a square head, but looks if its been sheared off.
You could try fitting an "Easibleed" (https://easibleed.co.uk/) to the front top of the radiator, otherwise, unless you can drill the old one out, remove the remnants and find a fit a new valve, new radiator.
 
Maybe that is why it was never done before!

Plan to get a new rad, almost through winter, so maybe it will wait.
 

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