DC Solar Water Pump 1. GS, ROHS.CE.ISO9001:2000 2. ... Easy installation 3.Maintenance-free 4.Non-Pollution Noiseless NEWSKY 3SPS DC Solar Power Water ... ,over-flow, overload, waterless , automatic recovery ,controlling water height as demand.2. Easy installation, maintenance-free, ... fountain etc. Working condition: 1.Non-corrosive water, the volume ratio of sand content no more ...