Whale WaterMaster Submersible Pump Kit with Truma Crystal II Adaptor 12VSuits Truma Crystal II Socket Choice of flow rate to suit either a simple one or two outlet system with two or more outlets including a shower This water pump has a Easi Squeeze Plug which will fit in your truma socket The Whale Watermaster Exterior Water Pump is ideal when you are using an external water source. It can pump up to 15. 8L per minute and simplifies the connection between an outside water container into the caravan Simplifies the