Hi,
Just fitting a replacement direct feed vented hot water cylinder and need to replace fittings/adaptors for the drain tap. There is large adaptor screwed into tank followed by a reducer fitting and finally drain tap. can anyone advise me on the sizes (thread and diameter) I have to purchase please. The removed cylinder was of 1978 vintage and all the other fittings fit the new tank perfectly, if this helps. Thanks again for any assistance.