Aquaroll Mains Water Adaptor Designed to give caravans and motorhomes the benefit of running water when a mains supply is available. Can be used with any caravan or motorhome, with no expensive alterations needed. Easy to fit when a threaded tap is available on site. Approx 20 litres of water is held in the Aquaroll if the mains supply is affected. As there is no mains pressure inside the caravan the danger of flooding is eliminated. Included: Easy to fit ball valve with strong storage box. 7.5 metres of food grade quality hose. 1/2″ threaded tap connector, 3/4″ threaded tap connector, snap on tap connector. snap on stop connector to ball valve.