Whale EP1622 Carver Pump AssemblyWHALE Watermaster Carver Crystal Assembly 12V High Flow. This high flow submersible pump from Whale is part of their Watermaster Freshwater Connection Range. It offers higher flow rates and greater life. Compatible with Truma Crystal II Socket and Compact sockets making it is easy to fit to your external water container straight into your caravan. Features And Benefits Simplifies the connection between an outside water container into the caravan The