Max 3.0 Gallons Per Minute capacity flow, and 45 PSI pressure,This series pump can be used for general water transfer, sprayer pumps, small rain system, or other industry usage(perfect for water heater shower, caravans, RV, knapsack sprayer) , use it with fresh or salt water or other liquid with weak acid&alkaline is ok. The pump with built-in pressure switch, can be working automatically when the tap turn on-off. 3GPM 12 volts diaphragm pump designed to meet the freshwater needs of most vessels with a water heater, shower, toilet . Soft rubber mounts isolate pump vibration from mounting surface for quiet operation. A corrosion-resistant design and ability to run-dry extends service life. A screw-less diaphragm eliminates possible leak paths. Quick-connect fittings are included for ease of installation and to simplify routine maintenance. 3GPM freshwater system pump key features: Honeywell micro switch Medium volume on-demand freshwater pump 4 chamber diaphragm design for smooth water flow Built in bypass to eliminate pulsation and rapid cycling Vibration absorbing mounts for quiet operation Quick release snap-fit port fittings for easier installation Corrosion resistant pump head and motor housing Self-priming up to 2 m 2.6 kgs only RV water pump technical data: Model Volts Pressure Flow rate Amps HY-30451T 12V 45PSI 3GPM(11.6LPM) 8.0A HY-30452T 24V 45PSI 3GPM (11.6LPM) 4.0A