NorthStar ATV Tree Sprayer - 26 Gallon, 5.5 GPM, 12 Volt 12V 5.5 GPM NorthStar NSQ Series on-demand pump provides faster priming and longer life; 60 PSI max. 100% continuous duty rating Honeywell MICRO SWITCH for enhanced durability and efficiency Patent-pending DXS-3 valves are made with chemical-resistant Viton for faster priming, better performance and longer life Santoprene diaphragm for superior reliability and chemical resistance