I thought this would be easy but not so far! I want to remove a rad in the kitchen while decorating, it is piped in microbore and has both pipes going in the same valve at one end. So I screwed down the valve to turn it off but obviously this only shuts off one pipe (the feed I presume?). So I have removed the cap and underneath we have a white plastic toothed wheen that the main valve handle turns, then a nut (is this the other valve?) then a brass ring with a tab on it that just seems to move up and down the thread when turned(range limit maybe?). I cant seem to stop the rad filling with water though (pressurised system) - have tried the inner nut both up and down, but no luck so far. How exactly should the 2nd pipes valve be closed off? Wanted to try and do this without draining the whole system but if that is the only way...
cheers
Dave.