... medium temperatureLess than 40°CPH6.5-8.5SituationBe immersed in waterApplicationPumping water from deep well, gardening, fountain and ... voltage, over-flow, over-load, waterless, etc;automatically recovery;control water height;easy installation, maintenance-free, safe, reliable, energy ... always. XINYA DC 4 inch 72V screw solar powered solar submersible pump water pumping system (4SPS4.2/120-D72/1300)