Sorry been very busy. Needsless to say I would not be using wholesale welding supplies again. They said that the product was in stock but still took 3 weeks for it to be shipped. They had taken my money on day one, which I suppose is fair enough. They are 2 minutes down the road and charged me 12 euro delivery on the regulator and then hand delivered, which I thought was a bit cheeky. I had asked them for a barbed fitting to connect the regulator to the beer line and they supplied me with a fitting that had a not return valve, in the opposite direction!!! Could not get any CO2 out of the cylinder. Spent about an hour modifying fitting (had to drill out non-return valve). Anyway the regulator itself has a 5/8" BSP fitting which is exactly what the tank takes.
Apart from the extreme messing I am actually very happy with the regulator.
[url:14rqxq79]http://www.flickr.com/photos/rob_oconnor/7801097682/[/url:14rqxq79]