OK, so what's different about this tap? Well you can easily lock it so that vandals can't come along and drain out all your water! Another advantage is you can use it to drain your water tank when returning from a trip. We came across this idea on a Winnebago Leisure Seeker owned by Georgina and Roy Coalter from the CMCA Brisbane Sunshine Wanderers. Roy says it is great to be able to wash your hands when cooking up a BBQ!