Specification: Capacity (m3/h): 360-1440 Head (m): 10-60 Speed (r/min): 400-850 Max. Efficiency N-n%: 65 NPSH (m): 1.5-4.5 Allowable Max. Power (Kw): 600 Description: The range of Dredge and Gravel pumps is designed specifically for continuous pumping of extremely aggressive slurries, with a wide particle size distribution. ...
http://http://www.sunbopump.com/Gravel-Pump/1210-River-Sand-Dredging-Pump-Gravel-Pump-157.html