... 3SPS DC Solar Power Water PumpFeature:1. Compact structure, high-lift, noiseless, non-pollution, complete electrical protecting controller device ... steel submersible motor, graphite bearings.Application: Water irrigation, high efficiency of increasingoxygen on aquaculture, pumping water from deep ... must be immersed in water. NEWSKY Noiseless Screw Low Flow High Head 3SPS DC Solar Water Pump