... New research and development of new type electric diaphragm pump, using BLY series cycloidal reducer drive power, replace ... life can be more widely series pump to partly replace centrifugal pump of screw pump,, submersible pump, mud pump and impurities pumps, application in ... 8: through the performance is good, big particle impurities, mud, etc. Can be effortlessly through; 9: according to different ...