Quote Originally Posted by AdieR View Post
It isn't those quick-fit fittings for flexible pipe by chance (used in some radiator circuits, and similar in apperance to plastic airlines)? Pictures would be useful if you can get some.
Panic over, persuaded the olive to come off so all is revealed. Nut bent, new part coming, found it had a 5 year warranty, got it for free

It's the plastic outlet fitting on the Franke 'Little Butler' tea making tap. I stuffed a silicone rubber tube on one end, finger over the other, immersed it and blew. Two tiny streams of bubbles, presumably on the opposite side to the plastic injection gate, looks like the weld line couldn't take the heat :naughty: