Designed to give caravans the benefit of running water when a mains supply is available the mains adaptor can be used with any caravan. There are no expensive alterations necessary and it is easy to fit when an individual tap is available on site. In the event of mains supply interruption there is 20 litres of reserve water in the Aquaroll. No mains pressure inside the caravan so there is no danger of flooding. Easy-to-fit ball valve with strong Storage box. Includes: 7.5 metres of food quality hose Snap-on stop connections to the ball valve Threaded 0.5" & 0.75" tap connectors provided AND a Snap-on connector so whatever the tap the Mains Adaptor will fit