High removal efficiencies originate from the PISTA^® 360™ Grit Chamber’s unparalleled hydraulic design, including its flat chamber floor, patented and engineered V-Force Baffle^TM and low-energy axial-flow propeller. The combination creates a true vortex that effectively separates grit from organics and the waste stream. Forced vortex action distinguishes the PISTA^® Grit Chamber from all other so-called “vortex” grit chambers because it does not rely on less efficient particle settling or gravity.

PISTA^® offers flexible application whether from domestic sewage in a municipal headworks or industrial process streams in a commercial production facility. The grit chamber can be installed above-grade or below ground with concrete, carbon steel, or stainless steel tankage. Individual units can handle waste streams less than 0.5 MGD all the way to 100 MGD. In large treatment works, multiple units arrange to efficiently remove grit from hundreds of millions of gallons of flow a day.