Combining the Chemineer® Model 20 HT/GT mixer with the Chemineer RL-3™ impeller creates the ideal mixer for wastewater treatment plant applications, eliminating downtime and maintenance costs, increasing performance and extending the service life of the agitator. The RL-3 ragless impeller is designed to prevent fibrous material build-up on the rotating impeller of the agitator. In blending and solids suspension applications where the fluid contains fibrous material, typically found in the wastewater treatment industry, the resulting build up on the agitator’s impeller can deteriorate performance, increase energy costs and even damage the gearbox bearings and gears causing costly repair. The Model 20 HT/GT mixers incorporate a modular design package that reduces the number of replacement parts that need to be carried in inventory by the customer. The wide range of speeds available provides improved process control and greater application versatility. The Model 20 HT/GT agitators are designed to meet AGMA, OSHA, ANSI, IEC, DIN, EU and ATEX standards and requirements.