Get current pricing for Durco, MK3 STD 2K4x3-82/65R Flowserve Durco Mark 3 Pump Rated For Approximately 440 Gpm At 140 Feet Of Head. Pump Size Is 2k 4 X 3 - 82 / 65 Rv. Pump Has A 8.5 Reverse . Product Category: Process Equipment, Sub Category: Water Treatment - Misc.: