The CLM 7½" x 10" Duplex Hydraulic Mud Pump will fit into the place of a 5" x 6", pumps twice the rated flow, at almost three times the pressure, and weights half as much and is 19 ½" shorter than a 5½" x 8", pumps 35% more, at over twice the rated pressure, and weighs ¼ as much.
It takes six 5" x 6" pumps (each lined with 3" liners = 13,980 lbs.) to match the rated pressure and volume of one CLM 7½" x 10" duplex!

Video Demonstration

Specifications:
300 GPM displacement @ 800 PSI @ 40 strokes/minute 77.3" long x 34" wide x 32" high; weight 1300 lbs