Anyone remember some discussion hereabouts concerning some Really Useful new radiator tails which Screwfix had added to their repertoire: they incorporated in-line screw-head valves to enable a rad to be qickly isolated and removed, and later replaced, while still full of water: no mess, no draining down, no loss of inhibitor etc etc: seemed briliant.
I bought a pair about a year ago intending to use them but never did, and finally fitted them only today to a new radiator. Went on fine, looked neat, then I opened the valves to fill the rad and.... one of the bloody things leaked like crazy, around the screw-head which you turn to switch the flow on and off. So, absolutely nothing that can be done other than drain down, dismantle the whole thing again, and go out and buy some proper tails.
So I'm well chuffed.
Had a look on screwfix.com to see when I ordered them and what they cost me but I note that all trace of these gizmos has now vanished from Screwfix's catalogue and records, apparently. Funny, that...