Capacities are from 18 L to 3364 L for cisterns, 95 L to 115 L for tanks and 73 L to 441 L for cylinders. Takes account of the New Model Water Byelaws requirements and reflects changes to other specifications in this area.Cross References:BS 699BS 729BS 864:Part 2BS 1140BS 1449BS 1565BS 1566:Part 1BS 1566:Part 2BS 2777BS 2779BS 2989BS 3198BS 3416BS 3456:Section 2.21BS 4213BS 4360BS 4781BS 5609BS 5615New Model Water Byelaws 1986