| 摘要 |
A delivery system 10 for the fresh water of a caravan. The system has its own pump 16, 24. A water supply line 12 is provided through which the pump 16, 24 can deliver water from a portable water tank into the caravan. The water supply line 12 includes a primary branch 14 adapted to deliver water from a primary portable water tank, and a secondary branch 22 adapted to deliver water from a secondary portable water tank. The system has a controller 20 connected to the water supply line 12, the controller 20 being adapted to switch the water delivery between the primary water tank and the secondary water tank dependent upon the level of water within the respective tanks. Preferably valves 28, 30 are present which may be non return valves. Optionally float switches 32, 34 may be present. |
