Industrial hydro extractor , direct drive, self balancing with automatic d.c injection brake, all stainless steel, inner & outer, silent vibration less operation, auto timed, auto stopped through dc injection brakes, self balancing, fitted with single phase preventor & motor protection relay, least maintenance. optional--vfd, pneumatic control system standard features:- construction direct drive all wetted parts are stainless steel safety door lock technical:- optimized special motor auto dc injected brake. electrical:- user friendly fully automatic panel controls.