Water Pumps Now stocks a huge range of 12 volt submersible pumps including 12V bilge pumps, inline pumps which are also dual 12V submersible water pumps and domestic transfer pumps. Most 12 volt submersible water pumps are compatible with both salt and freshwater with a number of inline submersible pumps also used for diesel transfer. Around the home 12V submersible pumps are ideal for emptying swimming pools, cellars or wherever you require a portable water pump to move some water. Fast Free Shipping throughout Australia. Full Australian Warranty. Technical support 1300 411 366.