For a mini dredger, inexpensive motor pumps with a capacity of up to 100-150 cubic meters per hour and a motor power of 7-15 hp are usually used.
The main motor pump, which pumps the water-soil mixture, is connected to a hose with a diameter of 76 or 100 mm.
Motor pumps for a hose with a diameter of 76 mm have a motor power of 6.5-9 hp.
Motor pumps for a hose with a diameter of 100 mm have a motor power of 11-16 hp.
The pressure developed by these motor pumps is within 2.5-3 bar.
Auxiliary motor pump for loosening bottom sediments
with a capacity of 5.5 — 7 hp and a maximum pressure of 5 — 7 bar.