The ChemGrout CG-502 unit is designed for maximum efficiency by allowing simultaneous operation of mixing and pumping with spraying options. It features an open throat size 4 progressive cavity non-pulsating positive displacement rotor-stator pump which gives steady and continuous flow of material. The CG-502 also comes with a single acting variable speed 030 piston pump for higher output. This grout pump handles a wide variety of materials ranging from fluid slurries, to heavily sanded grouts, with simple operation and low maintenance costs. Power options include air, hydraulic, electric hydraulic, gas hydraulic and diesel hydraulic.