Crisafulli uses its S-Series or J-Series direct drive, electrically powered, self-priming, centrifugal 1150 RPM and 1750 RPM pumps on the FLUMP, with a steel shaft extending from the motor to the pump. A hydraulically powered pump is offered as an option. The Rotomites use the Crisafulli 6" or 8" J-Series pumps.
36 years of experience building pumps. Crisafulli has engineered and built pumps for more than 36 years and started business as Crisafulli Pump Company. Crisafulli pumps are proven reliable and effective. Crisafulli builds pumps in sizes ranging from 2 inch (the diameter of the discharge pipe on the pump) to 24 inches. Depending on size, horse power (HP), and application, Crisafulli pumps achieve flow rates of up to 18,000 gallons per minute (GPM). Crisafulli fabricates its pumps and engineers its pump impellers and volutes to handle abrasive slurries. Depending on pump size, Crisafulli pumps can process “golf balls” - i.e., solids with diameters in excess of three inches.
Process up to 150 cubic yards of sludge per hour. Depending on the size of the FLUMP and the desired sludge processing capability, the Crisafulli pump will have a 3 inch, 4 inch, or 6 inch discharge diameter. As a “rule of thumb”, the sludge processing capability of Crisafulli pumps used on the FLUMP will equal in cubic yards per hour the HP of the motor - i.e., a 100 HP motor driving a Crisafulli 6 inch pump will process 100 cubic yards of sludge per hour.
Rugged construction. The Crisafulli S-Series and J-Series pumps used on the FLUMP and the J-Series pumps used on the Rotomite are American made in Glendive, Montana, manufactured with an ASTM AR400 mild carbon steel (BHN 400 hardness) pump volute and impeller, dual carbon/ceramic shaft seals. The pump is mounted directly behind the cutterhead and is lowered (with the cutterhead) into the pond on the FLUMP’s ladder (the pivoting arm on which the pump and cutterhead are mounted, extending from the dredge platform to reach the lagoon bottom during operation).
Power. The pump has sufficient power to lift sludge up to 30 feet from the pond bottom to the pond surface and then to push the sludge horizontally up to 500 feet over water through the Crisafulli Floating Discharge Line, without a booster pump, to the designated dump site. Once the sludge in over land, the Crisafulli S and J Series pumps can push the sludge up to approximately 3,500 feet, depending on the topography and the consistency of the sludge.
Proprietary pump designs. Over 36 years, Crisafulli has developed proprietary pump designs.   “Crisafulli Impeller Inside” describes our pump line - our trailer, vertical, hydraulic, submersible, and axial flow pumps.  In most cases, a Crisafulli Pump is also used in Crisafulli FLUMP and Rotomite Dredges.  With a Crisafulli Impeller Inside customers are assured of reliable high capacity dredging systems.