Cornell Pumps is one of the best pump vendors in the ag market today.  Cornell created an innovative cutter design, using a stationary and rotating element to reduce masses of solids to a size that will pass through the pump.  Most cutter models have efficiencies that are reduced less than 4% from the standard Cornell efficiencies for enclosed, solids handling impellers.  This minor reduction is offset by a dramatic increase in "up times".  The resulting increase in pump station efficiency can save tens of thousands of dollars per year.