The ChemGrout CG-550-030 features a single acting, variable speed 3" piston pump that provides the versatility to handle materials ranging from fluid slurries to heavily sanded grouts. This single acting piston pump is engineered for easy operation and low cost maintenance. The ChemGrout CG-550-030 is designed to give consistent non-stop discharge of material which virtually eliminating clogging of tremie lines. Its large 45 gallon mixing tank features specially designed blades and baffles that develop a high shearing action, insuring rapid and thorough mixing giving an output of 16 gpm and pressure of 400 psi. The Rugged Series has skid and trailer mounted versions with hydraulic and air power options.