... system for electric servo pump 1.PC pump,Beltless,Reverse rotation prevented 2.12KW, 21KW, 31KW,200rpm 3.CE,ISO Stars Progressing Cavity Pump ... Pumping Units, Direct drive system for electric servo pump---NAS-B SeriesThis system contains Control cabinet, ... itself, matching perfect, service convenient. Main Parameter System Series SML Control cabinet Model No. HX-600HX- ...