The ChemGrout CG-550 Geotech Series includes both skid and trailer mounted grout plants. These units feature a 70-gallon (265 liters) mixing tank, a large 45-gallon (170 liters) holding hopper and the rugged single-acting 3″ piston grout pump. The mixing tank is equipped with baffles, bag breaker and a variable speed high-efficiency paddle mixer that provides rapid grout mixing. The tank outlet is a large slide gate that allows viscous grouting materials to flow quickly into the removable holding hopper. The large holding hopper is sized to provide continuous pumping, the mixer is charged while the hopper feeds the pump.