Hi, sorry if this has been posted before - I've read a few threads regarding connecting a pub gas cylinder to a pressure barrel but can't seem to find all the information i need or the parts required. So... i have two budget beer barrels with standard caps (no valves), a big pub gas bottle of co2 and a regulator. What's the best way to setup so i can add gas to each barrel from the cylinder starting from scratch? Which of the two s30 valves (piercing/non piercing) would be better (if any) and if i need a universal hose where on earth do i get one as they all seem to be out of stock?