I was 'drifting' the 'Temporary Outside Tap' thread too much with my questions about accumulators so I though I'd start a new one (but I don't know how to link to that existing thread - soz).   The flow from my 3/8th" main is 15lts/min at 4bar which wise counsel advises me is a bit puny and the advice was 1 or 2 accumulators situated outside of the house to give me the boost I need. I've agonised over where to put the accumulator/s and am now thinking of going ahead without using an ac