... 2.12KW, 21KW, 31KW 3.CE,ISO Stars Progressing cavity pump motor and driver for oil extraction ---NAS-B SeriesThis system ... or Hot humid areas. Large torque of overload can resist pump blocked by sand, and apply to general oil well, viscous ... by Stars itself, matching perfect, service convenient. Main Parameter System Series SML Control cabinet Model No. HX-600HX-1000HX-1500 Servo ...