Got a radiator in upstairs bathroom thats cold at top and hot at bottom i.e. needs air removing, but there is no bleed valve on it. Its a newish radiator fitted by previous house occupants. How do you bleed a rad that has no valve?
I can't believe anyone would produce a radiator without catering for the fitting of a bleed valve.
Is there a threaded hole fitted with a plug where the bleed valve should be. On the ends or the back. Is there a plastic cap on the back which might be hiding it. If it's a double radiator see if it's between the two panels.
There's got to be a simple explanation!. Please let us know how you solve the problem.
once i was in same situation like you but after long search i have found the bleed valve.
it was on left side, behind the front panel and caped by white top ( you can't really see that feel it by moving your hand around )
hopefully this might help you