I originally purchased item 61271 Tank connector, but the flange fitting was 36 - 38mm cut out and way to big for the existing hole which was 25mm in a water butt tank. So I purchased the above on the hope that it would fit.
It did, and all seems fine, however the first item that I purchased came with sealing washer, this item does not. Luckily I had got a suitable rubber sealing washer which did the job.
It would be helpful if there was more than just the manufacturers part No in the technical info. Dimensions would be useful !
Bought this one day and had to take it back the next day
Could not undo the coupling