Consists of square tank, velocity control is done with the help of fins (RCC or FRP), simple mechanism consists of drive unit, drive shaft, scraper frame 2 or 3 depending on tank size ,scrapers pushing the grit to a corner of the tank.
Consists of reciprocating bridge, trolley, scrapers and skimmers, electrical panel, limit switches, beach plate and other accessories. Scraper scraps the floor in the forward motion , lifts during backward motion, Skimmer skims the surface in the backward motion , lifts during forward motion. Grit pumps can also be used for collecting the settled grit.