VSS Marine vertical centrifugal pump

                                                                    &nbs p;           First.  Summary

           VSS type is used chiefly for cooling fresh water, cooling sea water, sea water service,bilge & ballast,fier & general sercice. The pump can used as materical water ring of the vacuum pump or used as an automatic self-priming pump by fitting an air ejector.

          This type vertical centrifugal pump has been for convenience of shipboard outfitting and special consideration has been given to such points as minimizing  there area of installation ,ease of overhaul and at the same time reduction of maintenance cost, and smooth opration.

         1.The pump casing is split constuction ,so the rotating element can be lifted and horizontally moved without moving the motor.

         2.The shaft power curve have a highest point,so it is not to overload the motor power in any conditions.

        3.The low-speed design is adopted,so:

             (1)the NPSHr valve becomes minimum;

            (2)the abraison of the mechnical sealand the line bearing etc. is reduced;

            (3)the vibration is reduced.

                                                                                       Second. Construction and Materials

        VSS type is vertical single-stage & single suction centrifugal pump,the split casing is adpoted. The pump is connected with motor by flexible coupling.

       The shaft sealing is mechnical or glandpacking. Self-priming device can be attached to the pump.

                                                                   The third.  Performance

                                                                   The   fourth.  Dimension