Aqua Jet Water Pressure Systems 3.5GPM, 24V. The five chamber Aqua Jet WPS-series provides a reliable heart for small boat and recreational vehicle water pressure systems. Compared to conventional three or four-chamber diaphragm pumps, the Aqua Jet demonstrates dramatically lower noise and water pulsation characteristics. It is recommended to install the WPS-pumps with an accumulator tank. Hose weight, 2 kg /4.5 lbs, Length, 236,5 mm/9.31". Width, 210 mm/8.25". Height, 116 mm/4.575". Gallons Per Minute, 3.5. PSI, 41. Volts, 24. Box Dimensions, 6" x 7" x 12". Wt 7.5 lbs.