WQ(QW) series submersible pump is a vertical sewage submersible pump, it is composed with pump body, mechanical seal and motor. The pump is made of cast iron. It is used mechanical seal between pump body and motor for well sealed .The series pumps are equipped with overload or overheat protection device. The flow-rate range of the delivery water is 7-10000m3/h, lift range is 7-60m, power range is 0.55-315Kw, caliber range is  φ25-φ700 mm. Widely use on boat, ship and other industria area.