WHALE Watermaster Assembly 12V High Flow suitable for all Whale External Water Inlets. Simplifies the connection between an outside water container and the caravan. Simply drop the 12v Submersible Pump into a Water Container and plug into the side of the Caravan or Motorhome. Suitable for both microswitched or pressurised systems. Incorporates an anti air-locking pump enhancing the performance of the WHALE water system. Sold in singles or Outer Boxes x 15.