5-chamber diaphragm pump designed for continuous duty. Features dramatically lower noise & water pulsation compared to 3 or 4 chamber designs. Self-priming to 6.5' (8.2' for 5.2 GPM model). Includes an integrated pressure switch and can run dry without damage. Use the included inlet strainer before pump intake. 12 Volts. 3-Year warranty. GPM 5.2 Ports GHT, 1/2" NPT, 3/4" Hose