Developed for thick, fiber-laden materials like dairy manure, mixers from SUMA America are designed to stand up to tough applications in anaerobic digestion, wastewater treatment and sludge mixing. The robust designs provide reliable, long service with minimal maintenance. The use of low-pole motors and rugged gearboxes keeps the drawn current low, avoiding high heat generation in the motor windings. The drive head keeps thrust and radial loads from being transmitted to the drive bearings. 847/427-7880; www.gosuma.com.