I'm trying to fit an Ariston instant water heater. Ideally I would like to do it all in copper, but I've hit a snag with the tap connectors. The fittings are plastic and don't have a normal hole. See picture. A flexi tap connector would fit ok but I don't really want to use flexis if I can help it. I can't find anything that would allow me to connect direct to copper. Any suggestions?
