1,submersible deep well pump manufacturer 2, Flow:2-1000m3/hr 3, Head:10 ... 5,ISO,CE 1,QJ Series vertical submersible deep well pump tech parameter :a) Caliber: DN150-DN400mmb) Flow:2- ... whole motor was sealed tightly.c) There are water injection hole and exhaust hole in the upper part of the ... thrust collar, mainly for sustaining remnant axial force of pump and the empty weight of motors rotor.e) The ...