1.Motor built-in protection device,when the three-phase power phase or motor overheating will automatically jump to avoid accidents,motor burned out;
2.gear using material chromiun manganese titanium alloy steel,tooth surface after carbonitriding,prolonging the service life greatly;
3.according to the special requirements of different use of the environmentand the user,developed engineering plastics and stainless steel impller,ensure in sea water or industrial corrosive wasterwater in the long-time use,without frequent replacement of the impeller or brush paint.