The Chemineer Model 20 HT/GT top-entering agitators feature a swing out seal change design for easy seal maintenance and reduced maintenance cost. With the Model 20 HT/GT agitators, there is no need to lift or remove the gearbox. Rotate the gearbox 90 degrees around the pivot pin. The top of the seal pedestal opens for a clear, line-of-site view and ample room for easy removal of the coupling half and seal assembly. The agitators feature a new, high-efflciency gearbox with helical gearing and a parallel shaft conflguration designed speciflcally for agitator service.