Model HY-50603T: 115 volt pump water 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, also can do bypass system model.

Model HY-40603T: 115 volt pump water 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, also can do bypass system model.

Model HY-30603T: 115 volt pump water 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, also can do bypass system model.

Model HY-404553T: 115V water pump:Max 4.0 Gallons Per Minute capacity flow, and 55 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.