AC 110V Self Priming Water Pressure Diaphragm Pump 4.5GPM 17LPM 40Psi For Boats, Campers, and Vans. Self-Priming : Allow for usage even if located above water tank. Built-in 40 PSI pressure switch automatically starts and stops the pump when necessary. Thermal overload protection automatically stops motor should it overhear due to overload with auto re-start feature Rated Flow is 4.5GPM(17 LPM).Long Time Operation at Small Flow/Leakage Would Damage Pressure Switch Very Quickly.Please make sure the flow rate you use is more than 60% of the max flow rate, at least 2.7 GPM(10.2 LPM). Descriptions: Pump Type: Diaphragm pump Voltage: AC 110V Max Flow: 4.5GPM(17LPM) Pressure Setting: 40 PSI(2.8 Bar) Pipe Caliber:3/4''(20mm) Hose Barb Amps: 1.0A Max.1.8A Duty cycle: Intermittent Max Liquid Temp: 140(60) Features: 1. Self-Priming: Allows for usage even if located above water tank. 2. Built-in 40 PSI pressure switch automatically starts and stops the pump when necessary. 3. Thermal overload protection automatically stops motor should it overhear due to overload, with auto re-start feature. 4. Capable of being run dry without damage.Quiet operation,Overheating protection and safety working. 5. Professional Grade Pump: Ideal for automotive marine/RV/caravans, agricultural spraying, general industrial, sprayer fixtures. Notes: 1. When the pressure switch stops,the pressure is 40 PSI. 2. Special value for liquid input and output. 3. Please clean it regularly in case of debris blockage. If the pump is stuck by something like Mud, it need to be cleaned with clean water before use. 4. Rated Flow is 4.5GPM(17 LPM). Long Time Operation at Small Flow/Leakage Would Damage Pressure Switch Very Quickly. Please make sure the flow rate you use is more than 60% of the max flow rate, at least 2.7 GPM(10.2 LPM)