Hi, I have found my filling loop, (pic here) http://s130.photobucket.com/albums/p272/invisible-man/?action=view¤t=DSC01494.jpg but although the tap/valve one end is self explanatory, the other end I hope someone can recognise, I know the loop has to have a double valve but one side has three caps/plugs within the valve and when I go to undo any of them, water comes out, I assumed that one of them would have a valve inside but I don't seem to get that far!
Many thanks
Many thanks