This conventional pressure switch controlled pump enjoys the same pulsation-free three chamber diaphragm design as our PAR-Max 2.9 and 1.9, but incorporates a heavy-duty motor, giving higher flows and long life for such a small footprint. Like all Jasso Water Pressure System Pumps, it is inherently quiet, self-priming and can run dry without damage. Quick-connection fittings are included.