Aquatec ® DDP-5800 Water Delivery Booster Pump - The DDP-5800 pumps can draw water from a holding tank and pressurize it, or boost the pressure from a low pressure source. They are designed to operate intermittently, but can run continuously for several hour intervals. Great for increasing pressure for longer runs, icemakers, wet bars, etc. demand/delivery pumps. These pumps can be operated either in demand mode (pressure switch controlled) or in delivery mode (controlled by external power switching device). Internal pressure switch built into the pump. Self-priming, auto-purging. Can run dry without damage.