Introduction These little pumps are perfect for automatic water transfer, like filling your RV water tank. But don't let it's size fool you: for up to 30 minutes, this pump can run 4 GPM Details 4 Year Warranty Operational for periods up to 30 minutes at once Entirely submersible Quiet operation Stainless steel shaft System can be made automatic with the introduction of a pressure switch Technical specifications 4 GPM open flow Current draw: 2A Recommended fuse: 5A Maximum head: 20ft