Hi, unfortunately it's an old radiator with the bleed valve built into the unit, only moving part is the bit you use the key on. Have tried using socket spanner bits of 5 & 4.5mm to get a grip, but 5mm is too big, 4.5 too small. Thanks tho.
Hi, bit of advice needed please. Two of my radiators are pretty old, & the bleed valves have started to round off to the point I can no longer use a key to bleed them. Anybody in the trade have any tips on what I can do to get them out to replace them, special tool maybe? Cheers.