The Seaflo 55-Series Heavy-Duty Water Pump provides high-volume water flow with reduced pump cycling, thanks to the large five-chamber diaphragm. The 55-Series pump is self-priming and can run dry without damage. Offering reliable performance and a low current, this automatic demand water system pump has a built-in pressure switch that automatically starts and stops the pump when the faucet is opened and closed. It's also easy to install, service, and winterize.• Can supply up to 4 fixtures• Precise pressure control and stable performance• Good sealing performance, waterproof, and dustproof• Good heat dissipation• Can be run dry• Low starting pressure reduces cycling• Can be used for fresh and saltwater• Threaded connections with multiple fittings allow connection to any outlet• 5-chamber diaphragm for high-volume water flow• Motor is no louder than your running room fan• Semi-rigid rubber feet for noise reduction from vibrationSpecsModel: SFDP1-055-060-55Voltage: 12VOpen Flow: 5.5 GPMControl Type: Pressure switch set at 60 PSIMax Draw: 17AValves: EPDMDiaphragm: SantopreneHousing Material: Nylon/PolypropyleneInlet/Outlet Ports: 1/2"-14 MNPTLeads: 14 AWG, 13" long with 2-pin connectorWeight: 6.1 lbs. Overall Dimensions: 8.5"L x 5.75"W x 5.16"H Built-in pressure switch automatically starts and stops pump when faucet opens and closes Can supply up to 4 fixtures Can be used for fresh and saltwater | 55-Series Diaphragm Water Pump, 12V, 5.5 GPM, 60 PSI