Quiet and pulsation free even at low speeds, the Aqua Jet five chamber diaphragm pump provides the perfect water pressure solution for both small and medium sized leisure and commercial boats. Efficient and compact, Aqua Jet pumps are particularly suitable where low amperage and sounds levels in relation to water flow are placed at a premium - such as in shower and galley applications. Operates in fresh or sea water. Self priming. It is recommended to install pump with an accumulator tank. Always use a PUM Protector inlet strainer before the pump intake. 100 watt motor with PP/PPA body, EPDM valves and santoprene diaphragm. 9.46" L x 8.42" W x 4.33" H. Weight: 4.5 lbs. Capacity: 4.0 GPM/Pressure Cut-Off: 41 psi/Fuse Size: 10 Amp/Connection: 3/8" NPT/hose/1/2", 1/2" NPT/hose 3/4"; 1/2" NPT, 3/4" hose.