demand/delivery pumps 5800 Series Our 5800 Series pumps are typically used to either a) draw water from a holding tank and pressurize it, or b) boost pressure from a low pressure source. Although designed to operate intermittently, most models can run continuously for several hours at a time. These pumps can be operated either in demand mode (pressure switch controlled) or in delivery mode (controlled by external power switching device). If needed, an integral bypass can be used to limit pressure. Distinguishing Features 3-chamber construction .25 to 1.5 GPM (5 LPM) flow Up to 130 psi (9 bars) pressure Adjustable switch and bypass settings Integral switch or bypass Self-priming, auto-purging Near silent operation at lower flows Highly efficient Runs dry without damage