Whaleflo Brushless dc water pump with a brushless DC motor and coupled with the impeller in its rotor in the housing structure.Due to the water around the rotor there is no Brush friction,therefore the spark is not generated.whaleflo brushless water pump is a typical electromechanical Integration products.
Difference between Whaleflo Brushless water pump and whaleflo brush water pump.
Due to the motor shaft and the rotor impeller directly connected and shaft seals, therefore the shaft and gasket works in friction status.so the brushed water pump life is short. and the industry applictions is also limited if compare with brushless solar water pump,also when the brush solar pump carbon brush used out,need to replace new carbon brush.
Brushless dc water pumps with magnetic conversion instead of the traditional structure pump.the motor and the rotor impeller is completely isolated by waterproof chamber so the sealing problems is completely solved. due to the rotating parts with the perfect combination of zirconium oxide and graphite ,the mechanical friction is minimized ,along with the longer life and low noise.
With Brushless motor,the function of the brushless water pump is aso perfect: governor function, FG signal output, overvoltage protection, overcurrent protection, anti-slip protection, over temperature protection, low-voltage solar start
but different customer with different choice,whaleflo brushed solar pump price more economic,like model whaleflo 6Lpm and 12Lpm solar water pump,but if you prefer large flow ,then recommend Whaleflo 3PB/4PB Screw Solar series and 3PC/4PC  brushless centrifugal solar photovoltaic water pump.