Direct Feed Vented Hot Water Cylinder and Replacement Fittings Drainage and wastage systems and plumbing help, advice and answers

[andyspan]

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.

[lets have a look]

should be 1" down to 1/2"

[andyspan]

should be 1" down to 1/2"

Thank you very much for the reply, you're absolutely right! Have purchased a 1" bush down to 1/2" and new tap. The original fitter had used two bushes 1" to 3/4 and 3/4 to 1/2". The bush suggested alleviates one potential leak point!
Thanks again.