Sometimes it's hard to know where to post things. I will start here.

I just bought a second 9kg gas bottle for my portable heater. Now I need a clip-on POL adapter to go with it. I have been searching on-line and they are almost impossible to find. That surprises me, because every portable gas heater I have ever seen in this country has one. Have they been made illegal here, like so many other truly useful things?  

Anyway, I would like to buy one if anyone has a spare or knows where I can find one. I don't need a whole regulator, since that is already on the heater hose, just the adapter to screw into the bottle. It looks something like this (the bit coming out to the left):