This pump is suitable for a bore casing larger than 100mm in diameter as the pump diameter including the cable guard is 100mm. You would need to allow a few millimeters on either side of the pump for water to flow past the pump. It can also be used with a 5" or 6 " 150mm bore casing. If it is to be used in a 5 " or 6 " bore casing, it is recommended that you shroud the pump. This helps keep the motor cool. This pump is best suited to bores varying from 80m deep to 110 m deep. Designed for domestic clean water use. This pump has radial or semi-axial impellers. The impellers and the diffusers are in plastic material (noryl), whereas the bearings are in ceramic / rubber lubricated by the water circulation. The check valve is incorporated in the delivery body with threaded outlet. The coupling pump motor is made to conform with NEMA regulations, it has ISO9000-2000 management certification and CCC, CE safety certification.
The main portion of the deep well pump is made of stainless steel and copper alloy. The impellers are specially designed and restructured. The inducer casing is modified by polycarbonate to strengthen its wear resistance.
The inducer in each level requires an independent silicone rubber shaft bearing. The motor consists of the liquid-immersed structure which requires a radial thrust bearing with a strong support force and is mechanically leak proof.
Deep Well Submersible Pump Operation & Installation Manual