... 3.one year warranty 4.casting,SS available end suction mining submersible pump for deep well Operation parameters : Flow range : 10-500 m3 ... , retaining barrel , downdraft , high power, high flow, high-lift pump, downdraft pump is designed for mine underground rescue drainage as water-carrying ... 3m. 5. Water temperature should be no more than 20°C. 6 .Sand content of the water ( by mass) should be ...