Drilling Fluid Solutions utilizes positive displacement and centrifugal pumps of all sizes. Models include: 2’ Gurman Rupp, 3’ Gurman Rupp, 4’ Gurman Rupp, 3’ Mack Daddy centrifugal pump, Ne 60 positive displacement pump, NE 80 positive displacement pump, NE 120 positive displacement pump, 6’ Gurman Rupp transfer Pump, 8” Gurman Rupp transfer Pump.