Get current pricing for G & L, 23SHK6 G & L Model 23shk6 Centrifugal Pump. Pump Size Is 3 X 4 - 8, Impeller Is 8.06 Inches. Pump Is Rated For Approximately 800 Gpm At 205 Feet Of Head. . Product Category: Process Equipment, Sub Category: Water Treatment - Misc.: