Can anyone offer me a solution to my problem? I am trying to connect a 3/8" (european) threaded toilet fill valve to a 15mm copper feed pipe. It is side fill and currently I am trying to use a 3/8" x 1/2" bush which threads onto the thread of the fill valve which in turn threads onto an elbow which has a 15mm compression on the other end. The problem is unlike a tap connector, using the item above means as I thread the elbow onto the fill valve to full tightness the orientation to the 15mm pipe near to it is not correct which means loosening off the elbow to re-orientate it correctly in the direction of the 15mm pipe near to it but this then creates leaks. I think what I idealy need is the above but rather than 3/8 x 1/2 bush, a 3/8 tap connector on an elbow with a 15mm compression on the other end would I think do the trick. Does such an item exist?The 15mm copper fead pipe is very close to the thread of the fill valve and so I need an elbow fixing ideally. Can anybody offer me any much appreciated advise/solution to my predicament?