Page 28 - Know and Understand Centrifugal Pumps
P. 28

Basic Pump Principles

                              ATMOSPHERIC








                                              DISCHARGE
                                                HEAD





                                                      ...  --- . .-.
                                      I    I   I   N1CMY    .^.










      Figure 1-7

       push the liquid up into the discharge vessel. This pump (Figure 1-7) is
       said to be in suction lift.
       In this  case,  the  pump  must  aspirate  or lift  the  liquid  up  from  the
       suction  vessel  into  the  pump  and  then  push  the  liquid  up  into  the
       discharge vessel. In this case the total head is the discharge head plus
       the suction lift. In all cases the total head is the work being performed
        by the pump.
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