... Theproduct is characterized by low power (1.5-9KW), low rotate speed (34~85rpm), large diameter of the blades (1100-3000mm),lowspeed ... speedmovement status to produce gradual water flow.2,BWT low speed flow propeller is developed and improved by ourselves to ... thrust. On thepremise of ensuring the mainframe reliable, firstly the speed reducer selects a high efficiencyone, the output power is improved ...